1. (1) Nursery school.

   1. (i) There shall be no more than 20 children in one group in one room.
   2. (ii) For three-year-olds, the ratio of children to adults shall not be greater than 8:1, with a qualified teacher in attendance at all times.
   3. (iii) For four-year-olds, the ratio of children to adults shall not be greater than 10:1, with a qualified teacher in attendance at all times.

2. (2) Kindergarten.

   1. (i) There shall be no more than 22 children in one group in one room.
   2. (ii) For five-year-olds, the ratio of children to teachers shall not be more than 15:1, with a qualified teacher in attendance at all times.
3. (3) Day care center. If a school is in session more than six hours a day, the rules and regulations of the Department of Social Services regarding ratio of children to child care staff shall be followed (18 NYCRR 451.8).

(a) Supervision.

In a school there shall be more than one adult available to any group at all times.

(b) Class size.

There shall be an enrollment of not less than six pupils in a group in any one session of either nursery school or kindergarten.

(c) Staffing.