N.Y. Comp. Codes R. & Regs. tit. 8, § 151-2.11 – Program continuum.

(a) Developmentally based curricula appropriate for the ages and developmental stages of the children in the program shall be implemented.
(b) The program shall be varied in order to promote the physical and emotional well-being of the children, and encourage the development of language, cognitive and social skills.
(c) The minimum class size shall not be less than 16 children with one prekindergarten teacher and at least one teacher assistant/aide.
(d) The maximum class size shall not exceed 20 children with one prekindergarten teacher and at least two teacher assistants/aides.
(e) Upon application and documented educational and space justification to the commissioner, approval may be granted for variance from the class size specified in subdivisions (c) and (d) of this section.
(f) The program shall provide for experiences which are designed to influence a positive concept of self, recognizing the cultural and varied backgrounds, needs, interests and developmental levels of the children.
(g) The program shall be designed to be multicultural, and nonsexist.
(h) The organization of the prekindergarten classroom shall allow for a balance of active and quiet play, and individual and group activities.
(i) Learning centers shall be clearly identified in the classroom, and must include but are not limited to the following areas:
1. (1) creative art;
2. (2) music;
3. (3) science;
4. (4) sand and water;
5. (5) family center;
6. (6) manipulative;
7. (7) woodworking;
8. (8) block building; and
9. (9) library/language arts.
(j) The program shall provide a sufficient quantity and variety of materials and play equipment which are appropriate to the age of the children and their developmental levels and interest.
(k) The program shall provide an opportunity for children to engage in indoor or outdoor gross motor activities on a daily basis.
(l) The program shall meet the needs of limited English proficient children by providing bilingual or English as a second language methodology as appropriate.
1. (1) An appropriate administrator shall evaluate the professional staff at least once a year;
2. (2) A prekindergarten program shall provide staff development activities in accordance with the strengths and weaknesses of program staff.
  (n) Supervision.
3. (1) For every prekindergarten program, there shall be a person as required in section 151-2.10(a) of this Subpart, designated as the director to supervise the program. Supervisory staffing must be sufficient to effectively operate the program.
4. (2) Direct supervision of classroom activities shall be provided by an appropriately certified prekindergarten teacher as required in section 151-2.10(b) of this Subpart.
(m) Staff development and evaluation.
(o) The prekindergarten director/coordinator shall initiate the formation of or participate on an existing Local Early Childhood Community Coordination Committee to promote collaboration of existing services.