Role: Entry-level Preschool ToddlerTeacher at Primrose School of Forest Hill- 1657 B Robin Circle Forest Hill, MD 21050 . To qualify as a Lead Infant Teacher in Maryland, you must meet one of the following: Option 1: Hold a 90-Hour Infant & Toddler Certification (45-Hour Child Growth & Development + 45-Hour Infant/Toddler Methods & Materials).