Our classroom ratios change with the major ages and stages. Infants: 1: 3 ratio with a max group size of 6 children Toddlers: 1:3 ratio with a max group size of 9 children K-Prep 2 Program: 1:6 ratio with a max group size of 12 children K-Prep 3 and K-Prep 4 Program* 1:10 ratio with a max group size of 20 children *Our K-Prep 3 and 4 programs fall under the Maryland Non-Public Schools certificate of approval, which means that during the academic day hours of 9:00am-3:30pm, our ratio is 1:12 with a max group size of 24 children.