The ratios are different in each classroom depending on the age level of the children in the classroom. In our infant room 4 - 18months, the ratio is 1-4 In the toddler room 18mths - 3yrs, the ratio is 1-7 In the preschool room 3yrs+, the ratio is 1-8 This ratio is lower than other centres because of the various needs of the children in our care.