This work requires the following physical activities: climbing, bending, stooping, kneeling, twisting, reaching, sitting, standing, walking, lifting, finger dexterity, grasping, repetitive motions, talking, hearing and visual acuity. Miami-Dade County Public Schools (M-DCPS), an A-rated district, is the nation's third largest school system with nearly 500 schools and a diverse enrollment of more than 335,500 students from over 160 countries.