(a) Subject to any exceptions in subsection (b) of this section, each school district and open-enrollment charter school shall comply with the following class sizes:

1. (1)

   1. (A) For kindergarten (K), there shall be no more than twenty (20) students per teacher in any classroom.
   2. (B) However, the kindergarten class maximum may be no more than twenty-two (22) with a one (1) half-time instructional aide being employed for those classes;

2. (2)

   1. (A) For grades one through three (1-3), the average student-to-teacher ratio in a school district shall be no more than twenty-three (23) students per teacher in a classroom.
   2. (B) There shall be no more than twenty-five (25) students per teacher in any classroom;

3. (3)

   1. (A) For grade four (4), the average student-to-teacher ratio in a school district shall be no more than twenty-five (25) students per teacher in a classroom.
   2. (B) There shall be no more than twenty-eight (28) students per teacher in any classroom;

4. (4)

   1. (A) For grades five through six (5-6), except for those courses that lend themselves to large group instruction, the average student-to-teacher ratio in a school district shall be no more than twenty-five (25) students per teacher in a classroom.
   2. (B) There shall be no more than twenty-eight (28) students per teacher in any classroom; and
5. (5) For grades seven through twelve (7-12), except for those courses that lend themselves to large group instruction, individual classes shall not exceed thirty (30) students.

(b) Exceptions — Physical education instruction in kindergarten through grade six (K-6).

1. (1) Physical education classes will have a maximum student-to-adult ratio of thirty-to-one (30:1).
2. (2) Nonlicensed personnel may assist in filling the thirty-to-one (30:1) student-to-adult ratio requirement if they are trained and assigned to assist licensed personnel in supervising physical education classes.