Birch AgencyNewGeneral Education Math Teacher (5th to 8th grade) Birch AgencyGeneral Education Math Teacher (5th to 8th grade)Pelham, NY$40–$40 / hourSee Birch Agency Terms & Conditions at https://birchagency.thejobnetwork.com/Terms.aspx?fromlean=1 and Privacy Policy at https://birchagency.thejobnetwork.com/Privacy.aspx?fromlean=1 and SonicJobs Privacy Policy at https://www.sonicjobs.com/us/privacy-policy and Terms of Use at https://www.sonicjobs.com/us/terms-conditions. We are currently seeking qualified Mathematics Teachers for Middle School to prepare and/or supervise students in Bronx, NY for the 2026/2027 school year.
Birch AgencyNewGeneral Education Math Teacher ( 5ht to 8th grade) Birch AgencyGeneral Education Math Teacher ( 5ht to 8th grade)Bronx, NY$40–$40 / hourSee Birch Agency Terms & Conditions at https://birchagency.thejobnetwork.com/Terms.aspx?fromlean=1 and Privacy Policy at https://birchagency.thejobnetwork.com/Privacy.aspx?fromlean=1 and SonicJobs Privacy Policy at https://www.sonicjobs.com/us/privacy-policy and Terms of Use at https://www.sonicjobs.com/us/terms-conditions. We are currently seeking qualified Mathematics Teachers for Middle School to prepare and/or supervise students in Bronx, NY for the 2026/2027 school year.
Birch AgencyNewGeneral Education - Math Teacher (5th to 8th grade) Birch AgencyGeneral Education - Math Teacher (5th to 8th grade)Pelham, NY$40–$40 / hourSee Birch Agency Terms & Conditions at https://birchagency.thejobnetwork.com/Terms.aspx?fromlean=1 and Privacy Policy at https://birchagency.thejobnetwork.com/Privacy.aspx?fromlean=1 and SonicJobs Privacy Policy at https://www.sonicjobs.com/us/privacy-policy and Terms of Use at https://www.sonicjobs.com/us/terms-conditions. We are currently seeking qualified Mathematics Teachers for Middle School to prepare and/or supervise students in Bronx, NY for the 2026/2027 school year.
Urban Dove Team Charter School IVNewHigh School Math Teacher Urban Dove Team Charter School IVHigh School Math TeacherNew York, NY$70,969–$114,450 / yearPlan and implement instruction that is student centered, involves independent and cooperative learning, scaffolded, and appeals to multiple styles of learning including strategies for students with IEPs and MLLs. Through education, they will acquire the critical skills needed to develop into economically, socially, and emotionally independent adults who are empowered to create a more just and equitable society for future generations.
Birch AgencyGeneral Education Math Teacher Birch AgencyGeneral Education Math TeacherBronx, NYWe are currently seeking qualified Mathematics Teachers for Middle School to prepare and/or supervise students in Bronx, NY for the 2026/2027 school year. The objective is to create an environment that fosters the development of students math skills and allows them to learn from diverse sources while also nurturing their individualities.
Jersey City Public SchoolsMath Teacher Jersey City Public SchoolsMath TeacherJersey City, NJA New Jersey Math Teacher job description typically involves planning and delivering engaging math lessons, assessing student progress, and fostering a positive learning environment to help students develop their mathematical skills and critical thinking abilities. Communication and Collaboration: Communicate effectively with students, parents, and colleagues regarding student progress and classroom matters.
Mathnasium (ID: 5101202)Math Instructor / Tutor Mathnasium (ID: 5101202)Math Instructor / TutorBayside, NYThe Mathnasium Method— the result of decades of hands-on instruction and development — has been transforming the lives of children through math since 2002 and continues to be shared through in-center, online, and hybrid instruction. We empower our staff to provide exceptional educational services, build confidence in our students, and create a deep understanding and lifelong love of mathematics among our youth.
Birch AgencyMiddle School-Math Teacher Birch AgencyMiddle School-Math TeacherBronx, NYWe are currently seeking qualified Mathematics Teachers for Middle School to prepare and/or supervise students in Bronx, NY for the 2026/2027 school year. The objective is to create an environment that fosters the development of students math skills and allows them to learn from diverse sources while also nurturing their individualities.
Birch AgencyElementary School-Math Teacher Birch AgencyElementary School-Math TeacherBronx, NYWe are currently seeking a qualified Mathematics Teacher for Middle School to prepare and/or supervise students in Bronx, NY, for the 2026/2027 school year. The objective is to create an environment that fosters the development of students math skills and allows them to learn from diverse sources while also nurturing their individualities.
Birch AgencyMath Teacher Birch AgencyMath TeacherStamford, CTWe are currently seeking qualified Mathematics Teacher for Elementary, Middle School to prepare and/or supervise students in Stamford CT, for the 2026/2027 school year. The objective is to create an environment that fosters the development of students math skills and allows them to learn from diverse sources while also nurturing their individualities.
Franklin SchoolMath Teacher Franklin SchoolMath TeacherJersey City, NJFull timeOur Maker Curriculum and Skills Curriculum provide students with hands-on opportunities to experiment, invent, and tackle complex global issues using Systems Thinking, Agile Thinking, Complex Problem-Solving, Artificial Intelligence, and more. At Franklin, we blend historical best practices with cutting-edge educational strategies, including Transdisciplinary Learning, Experiential Learning, and a future-proof curriculum that integrates emerging technologies, leadership development, and creative exploration.
MathnasiumMath Instructor Teaneck or Englewood NJ MathnasiumMath Instructor Teaneck or Englewood NJTeaneck, NJ$15–$17Our teaching method, the Mathnasium Method, is the life’s work of Larry Martinek, Mathnasium’s Chief Instructional Officer and a teacher and math teaching consultant in the Los Angeles area for more than 35 years. The Mathnasium Method increases a child's math competency and improves their lives by opening the doors to higher education, greater career opportunities, and a better future.
MathnasiumNewMath Instructor Englewood NJ MathnasiumMath Instructor Englewood NJEnglewood, NJ$15–$17Our teaching method, the Mathnasium Method, is the life’s work of Larry Martinek, Mathnasium’s Chief Instructional Officer and a teacher and math teaching consultant in the Los Angeles area for more than 35 years. The Mathnasium Method increases a child's math competency and improves their lives by opening the doors to higher education, greater career opportunities, and a better future.
Coney Island Preparatory Public Charter School2026-2027 Middle School Math Teacher Coney Island Preparatory Public Charter School2026-2027 Middle School Math Teacherbrooklyn, NY$71,250–$97,750 / yearParticipate in school community responsibilities such as lunch duty, dismissal and hallway duties, whole-school events, daily homeroom, bi-weekly advisory groups, weekly content team meetings, whole-staff professional development, lesson internalization and practice, and weekly grade team meetings. Demonstrate a reflective and solutions-oriented approach by actively seeking and responding to feedback, maintaining a high level of professional integrity, and collaborating with colleagues and school leaders to continuously strengthen teaching practice and school culture.
Coney Island Preparatory Public Charter School2026-2027 Middle School Special Education Math Teacher Coney Island Preparatory Public Charter School2026-2027 Middle School Special Education Math Teacherbrooklyn, NY$71,250–$97,750 / yearParticipate in school community responsibilities such as lunch duty, dismissal and hallway duties, daily homeroom, bi-weekly advisory groups, weekly content and grade team meetings, whole-staff professional development, lesson internalization and practice, and office hours once a week. Demonstrate a reflective and solutions-oriented approach by actively seeking and responding to feedback, maintaining a high level of professional integrity, and collaborating with colleagues and school leaders to continuously strengthen teaching practice and school culture.
Williamsburg Charter High SchoolNYS Certified Math Teacher Williamsburg Charter High SchoolNYS Certified Math TeacherBrooklyn, NY$68,000–$90,000 / yearYoung people will accomplish this through their participation in a rigorous and demanding liberal arts education that includes language, literature, writing, science, history, mathematics, the arts, technology and explorations in disciplines designed to teach fairness, justice, respect and compassion for themselves and others as well as the skills of critical thinking, communication and research. The Williamsburg Charter High School unites youth, families, staff, teachers and the community at large in providing young people with the tools necessary to make sense of the world and prepares them in their journey to become skilled workers in and literate citizens of the world community.
Explore SchoolsMiddle School Math Teacher (SY 26-27) Explore SchoolsMiddle School Math Teacher (SY 26-27)Brooklyn, NYYou will be expected to manage the following daily: Deliver lessons using a range of culturally-responsive pedagogical strategies to support all students in reaching high-levels of academic and social-emotional growth and achievement . Use Responsive Classroom approach to cultivate a positive classroom culture including, but not limited to, morning meeting, teacher language, interactive modeling, and other related practices .
Launch Expeditionary Learning Charter SchoolsMiddle School Math Teacher 26-27 School Year Launch Expeditionary Learning Charter SchoolsMiddle School Math Teacher 26-27 School YearBrooklyn, NYFull timeAfter students work independently or in small groups, select and sequence student work intentionally, display it, and call on students to explain their reasoning in full while the class listens, questions, and builds understanding together, holding students accountable for complete thinking, not just correct answers. Differentiate instruction to meet the needs of all learners, including students in ICT settings, students with IEPs, English Language Learners, and extension groups, using small group instruction, flexible grouping, and targeted intervention and enrichment.
MathnasiumMath Instructor/Tutor MathnasiumMath Instructor/TutorGreenwich, CT$20–$20Our teaching method, the Mathnasium Method, is the life’s work of Larry Martinek, Mathnasium’s Chief Instructional Officer and a teacher and math teaching consultant in the Los Angeles area for more than 35 years. The Mathnasium Method increases a child's math competency and improves their lives by opening the doors to higher education, greater career opportunities, and a better future.
MathnasiumMath Instructor/Tutor and Marketing Assistant MathnasiumMath Instructor/Tutor and Marketing AssistantWood-Ridge, NJ$16.50–$16.50Our teaching method, the Mathnasium Method, is the life’s work of Larry Martinek, Mathnasium’s Chief Instructional Officer and a teacher and math teaching consultant in the Los Angeles area for more than 35 years. The Mathnasium Method increases a child's math competency and improves their lives by opening the doors to higher education, greater career opportunities, and a better future.
MathnasiumMath Instructor/ Tutor MathnasiumMath Instructor/ TutorWood-Ridge, NJ$16–$17Our teaching method, the Mathnasium Method, is the life’s work of Larry Martinek, Mathnasium’s Chief Instructional Officer and a teacher and math teaching consultant in the Los Angeles area for more than 35 years. The Mathnasium Method increases a child's math competency and improves their lives by opening the doors to higher education, greater career opportunities, and a better future.
MathnasiumLead Math Instructor MathnasiumLead Math InstructorWood-Ridge, NJ$16.50–$16.50Our teaching method, the Mathnasium Method, is the life’s work of Larry Martinek, Mathnasium’s Chief Instructional Officer and a teacher and math teaching consultant in the Los Angeles area for more than 35 years. The Mathnasium Method increases a child's math competency and improves their lives by opening the doors to higher education, greater career opportunities, and a better future.
GUTTENBERG SCHOOL DISTRICTMiddle School - Math Teacher GUTTENBERG SCHOOL DISTRICTMiddle School - Math TeacherKlein, NJMiddle School Classroom Teacher Position Purpose Under the general supervision of the School Principal, to facilitate student success and growth in academic and interpersonal skills through implementing district approved curriculum; documenting teaching and student progress/activities/outcomes; addressing specific educational needs of individual students and by creating a flexible, safe and optimal learning environment; and providing feedback to students, parents and administration regarding student progress, expectations, goals, etc. Teaches all required subject matters as assigned to the grade level, which may including reading, language arts, social studies, mathematics, science, art, health, physical education, and music to pupils in a classroom, utilizing course of study adopted by the Board of Education, and other appropriate learning activities NCLB?.
Coney Island Preparatory Public Charter School2026-2027 High School Math Teacher Coney Island Preparatory Public Charter School2026-2027 High School Math Teacherbrooklyn, NY$71,250–$97,750 / yearParticipate in school community responsibilities such as lunch duty, dismissal and hallway duties, daily homeroom, bi-weekly advisory groups, weekly content and grade team meetings, whole-staff professional development, lesson internalization and practice, and office hours once a week. Scholars dive into a rigorous curriculum rich with AP courses, College and Career Readiness classes, all in a supportive, small-school environment with extracurricular opportunities from sports to enrichment clubs and leadership opportunities.
Russian School of MathMath Teacher (afternoons, evening and/or weekends) Russian School of MathMath Teacher (afternoons, evening and/or weekends)scarsdale, NYQualifications: Bachelor's degree in Math or related field (minimum) and Master's Degree in Education (preferred)Minimum one year of experience working with kids preferably in a school system or university settingsAbility and desire to make Math fun for childrenDesire for professional development and trainingExcellent interpersonal skillsExposure to or experience in other than U.S. models of Math Education is a plusFamiliarity with Math Competitions is a plus Benefits: RSM offers a comprehensive benefits package to eligible employees (upon meeting certain criteria) to support your health, well-being, and financial future. Pre-tax Savings: Take advantage of pre-tax savings options for eligible expenses, including health and dependent care.
Brilla Schools2026-27 Middle School Math Teacher Brilla Schools2026-27 Middle School Math TeacherBronx, NY$71,020–$119,000 / yearA national leader in character education and supporting students with varying needs, over the past two years, Brilla alumni have secured spots in the most prestigious high schools in the tri-state area, earning over $3 million in scholarships and financial aid. Our classically inspired approach to education combines a content-rich curriculum, inquiry-driven learning, and a focus on virtues, while providing individualized support to meet each child's unique needs.
Mathnasium (ID: 5101202)Math Tutor / Instructor / Teacher Mathnasium (ID: 5101202)Math Tutor / Instructor / TeacherGarden City, NYSuccessful instructors include college students in teaching or mathematics fields, current or retired teachers, and tutors who simply love working with children and young adults. With over 1,000 franchise centers globally, our math tutors use the proprietary The Mathnasium Method to teach customized learning programs for each of their students, whether they are behind or are ahead in math.
Harlem Village AcademiesHigh School IB Math Teacher, 2025-2026 Harlem Village AcademiesHigh School IB Math Teacher, 2025-2026new york city, NY$65,500–$107,000 / yearThe IB Teacher is an experienced, reflective practitioner who uses an inquiry-based approach within the IB framework to create positive learning environments which motivate and challenge learners to become self-regulated leaders and independent thinkers. As a national thought leader in deeper learning, Harlem Village Academies is distinguished as the only charter school network in New York offering Montessori PreK and culminating in the International Baccalaureate.
MathnasiumLead Math Teacher / Tutor MathnasiumLead Math Teacher / Tutorchappaqua, NYOur world-class curriculum is built upon the Mathnasium Method\u2014 the result of decades of hands-on instruction and development \u2014 and has changed the lives of children since 2002. Who We Are: Across North America and all over the world, Mathnasium Learning Centers are committed to teaching children math so that they understand it, master it, and love it.
Bank Street College of EducationMath Instructor - 7th & 8th Grade Middle School Bank Street College of EducationMath Instructor - 7th & 8th Grade Middle SchoolNew York, NY$35–$50 / hourOur childrens programs-Bank Street School for Children, Family Center, Bank Street Head Start, and Liberty LEADS-foster childrens development in the broadest sense by providing diverse opportunities for social, emotional, cognitive, and physical growth. The College further supports and influences positive outcomes for children every day through professional development programs, research projects, and other key efforts engaging educators, intermediary organizations, and government officials at the district, state, and federal levels.
Amani Public Charter SchoolMiddle School Math Teacher (Maternity Leave Coverage) Amani Public Charter SchoolMiddle School Math Teacher (Maternity Leave Coverage)Mount Vernon, NY$65,000–$90,000You will teach multiple math sections daily, lead an advisory group, support small group learning, and maintain regular communication with families. Our mission is to provide Mount Vernon students with the academic skills necessary to succeed in competitive high school programs, college, and the career of their choice.
TeacherJobsMath Teacher - High School TeacherJobsMath Teacher - High SchoolNew York City, NY$66,000–$150,000 / yearMultiple jobs are available in public, private and charter schools - all grades and subjects K-12. Check your email (junk folder too) for a message from a recruiter at TeacherJobs.com.
Bank Street College of Education5th and 6th Grade Math Instructor Bank Street College of Education5th and 6th Grade Math Instructornew york, NY$45–$55 / hourInstructors in the after school program will facilitate a homework help session as well as a math skill-building workshop with small groups of students while Saturday program instructors will facilitate the skill building through the context of project-based activities. Liberty LEADS works to ensure that youth with few economic resources have access to the supports necessary to realize their potential, make positive contributions to society, and smoothly make the transition into college or an entry-level career.
SEO (Sponsors for Educational Opportunity)10-11th Grade Math Instructor (Summer 2026) SEO (Sponsors for Educational Opportunity)10-11th Grade Math Instructor (Summer 2026)New York City, NYSkills include: linear, quadratic, and exponential functions (including compound growth formula); algebraic representation of functions; graphing functions and identifying key characteristics; modeling real-world situations with functions. Skills include: unit analysis; function notation, including function composition and inverse functions; characteristics of graphs; transformations of graphs; average rate of change; introduction to limits; introduction to the derivative and the power rule.
Brilla Schools2026-27 Elementary School Math Teacher Brilla Schools2026-27 Elementary School Math TeacherBronx, NY$71,020–$119,000 / yearA national leader in character education and supporting students with varying needs, over the past two years, Brilla alumni have secured spots in the most prestigious high schools in the tri-state area, earning over $3 million in scholarships and financial aid. The habits and practices that allow teachers' to drive outcomes include, but are not limited to: Participating in ongoing professional development, including formal and informal observation and coaching cycles and daily intellectual prep meetings.
Brilla Schools2025-26 Elementary School Math Teacher (2nd-4th Grade) Brilla Schools2025-26 Elementary School Math Teacher (2nd-4th Grade)Bronx, NY$70,000–$105,000 / yearA national leader in character education and supporting students with varying needs, over the past two years, Brilla alumni have secured spots in the most prestigious high schools in the tri-state area, earning over $3 million in scholarships and financial aid. The habits and practices that allow teachers' to drive outcomes include, but are not limited to: Participating in ongoing professional development, including formal and informal observation and coaching cycles and daily intellectual prep meetings.
New York City Charter SchoolNew6th Grade Math Teacher New York City Charter School6th Grade Math TeacherNew York, NY$70,000–$120,000Plan units to address big ideas within disciplines; Plan lessonsboth independently and collaboratively that are organized in the context of developed units and that include individual measurable objectives; Teach both independently and collaboratively with other teachers—including general education, special education and ENL teachers (most teaching schedules are four 50-minute classes a day, plus one 50-minute Advisory class four days a week); Teach reading using targeted intervention strategies, including shared and guided reading, in small groups; Run a daily advisory class that includes daily student goal-setting and independent reading and a daily morning meeting; Implement common, school-wide behavioral and instructional practices that address room management and culture-building, student citizenship and good behavior monitoring. family outreach, reading and writing routines, questioning and discussion routines, and assessment; Regularly administer, collect, and analyze assessment data gathered from a variety of sources; Use Google Classroom and other domain-specific platforms to create and maintain updated classroom and assignment streams, distribute student work, and assess student work; Participate in ongoing professional learning and support colleaguesby providing regular feedback on their practices; and.
Catapult Learning8th Grade Math Teacher Catapult Learning8th Grade Math TeacherBridgeport, Connecticut
MathnasiumMath Instructor / Tutor MathnasiumMath Instructor / Tutorplainview, NYThe Mathnasium Method\u2014 the result of decades of hands-on instruction and development \u2014 has been transforming the lives of children through math since 2002 and continues to be shared through in-center, online, and hybrid instruction. We empower our staff to provide exceptional educational services, build confidence in our students, and create a deep understanding and lifelong love of mathematics among our youth.
Revolution LearningMiddle School Math Teacher Revolution LearningMiddle School Math TeacherBrooklyn, NYSpecializing in courses like Entrepreneurship, Graphic Design, Coding, Engineering, Science, History, Math, and ELA, we aim to create an environment where teachers can connect with students and ignite their passions. Teachers are empowered to make instructional decisions that best meet their students’ needs, with ongoing organizational support to help manage classroom logistics and day-to-day responsibilities.
St. Luke's SchoolPart-Time In-School Math Tutor (Independent Contractor) St. Luke's SchoolPart-Time In-School Math Tutor (Independent Contractor)New Canaan, CTThe Math Tutoring program matches students who need additional support in their SLS math classes with an on-campus Math Tutor for tutoring sessions during the school day. St. Luke’s School, a secular (non-religious), college-preparatory day school serving grades 5 through 12 in New Canaan, Connecticut, seeks a Math Tutor.
Hebrew PublicMiddle School Math Teacher (2026-2027) Hebrew PublicMiddle School Math Teacher (2026-2027)Brooklyn, NY$62,000–$92,000 / yearOur network of public charter schools serves children from all backgrounds and helps them become global citizens who are great problem solvers, aware communicators, and lifelong learners who make a positive difference in the world around them. Implement instructional strategies and resources that are aligned with the rigor of the Common Core to meet the needs of all students, including those with varying backgrounds, learning styles and special needs.
Excellence Community SchoolsMiddle School Math Teacher (NY) SY26-27 Excellence Community SchoolsMiddle School Math Teacher (NY) SY26-27Bronx, NY$56,811–$139,554 / yearOur schools prepare young scholars to compete for admission to and succeed in top public, private, and parochial high schools by cultivating their intellectual, artistic, social, emotional, and ethical development. Our approach is built on a nationally recognized model that began with our flagship school, the Bronx Charter School for Excellence, a proud recipient of the National Blue Ribbon Schools Award.
Excellence Community SchoolsCertified Middle School Math Teacher (CT) SY26-27 Excellence Community SchoolsCertified Middle School Math Teacher (CT) SY26-27Stamford, CT$52,720–$114,167 / yearIdeal candidates are Dedicated to student success and committed to education reform Proven achievers who lead by example and havea track record of results Ambitious collaborators who model excellence hold themselves accountable and embrace teamwork Relentless advocates for equity and high expectations for all students If youre ready to make a lasting impact and do whatever it takes to ensure every child has an opportunity to reach Excellence we want to hear from you Responsibilities Plans and teaches collaboratively with the grade-level team to implement best practices that support the success of all learners. Our Mission and Vision Our schools prepare young scholars to compete for admission to and succeed in top public private and parochial high schools by cultivating their intellectual artistic social emotional and ethical development.
MathnasiumMath Instructor MathnasiumMath Instructorglen cove, NYOur world-class curriculum is built upon the Mathnasium Method\u2014 the result of decades of hands-on instruction and development \u2014 and has changed the lives of children since 2002. Who We Are: Across North America and all over the world, Mathnasium Learning Centers are committed to teaching children math so that they understand it, master it, and love it.
Growing Up Green Charter School2026-2027 Middle School Math Teacher Growing Up Green Charter School2026-2027 Middle School Math TeacherLong Island City, NYMission Statement:The Growing Up Green Charter School (GUGCS) supports children to be conscious, contributing members of their community through a rigorous, anti-racist, anti-bias, curriculum and engaging green culture. Salaries are determined using an equitable compensation scale that accounts for years of experience as lead teacher in a K-12 setting and levels of attained education.
Vertex Partnership AcademiesSY 26-27 High School Math Teacher Vertex Partnership AcademiesSY 26-27 High School Math TeacherBronx, NYFull timeOur Upper Academy provides students with rich options equal in rigor and stature: a Humanities-focused pathway with AP courses, or three different International Baccalaureate Career-related Programme pathways: Biomedical Science, Computer Science and Cybersecurity, and Montessori Early Childhood Education, all of which have real-world partners and result in an industry credential. All students train in the seven classical liberal arts of the Trivium and Quadrivium, with explicit instruction and practice of logic, grammar, and rhetoric, choose between Spanish and Latin, and trace the development of the Western Tradition.
Classical Charter SchoolsMiddle School Math Teacher (2026-2027) Classical Charter SchoolsMiddle School Math Teacher (2026-2027)Bronx, NY$52,000–$105,000 / yearRecognized as five-time National Blue Ribbon Award-Winning network, Classical Charter Schools outperforms 97% of New York charters by providing a transformative education through a classical curriculum focused on art, music, Latin, debate and character education. About Us: As one of the highest performing charter networks in New York City, Classical Charter Schools is having a meaningful impact on education in the South Bronx.
KIPP FoundationNew[2026-2027] Math Teacher - Middle School KIPP Foundation[2026-2027] Math Teacher - Middle SchoolNew York, NY$70,829–$136,704 / yearFrom our first middle school, KIPP Academy in the Bronx, to today's network of eight elementary schools, nine middle schools, and one high school, KIPP NYC provides students with engaging academics, arts, athletics, and social-emotional learning that prepare them for college, career, and beyond. About KIPP NYC: Founded in 1995, KIPP NYC Public Schools is a non-profit network of 18 free, public charter schools located in the Bronx, Brooklyn, and Manhattan.