1. A program of preparation for teaching in the secondary grades approved by the Board; or
2. Required courses for a teaching major from a regionally accredited institution; and
3. Twenty-two semester hours of credit as follows:
   1. Eight semester hours of supervised teaching;
   2. A course in the methods and materials of teaching a field of specialization; and
   3. Any other courses in secondary education approved by the Commission.

which requires 36 or 24 semester credits respectively

There are no specific requirements for these single subject endorsements.
You must have any combination of 30/16 semester credits, respectively, for the major/minor.