Is compensatory time a must?

After speaking with education advocate she said that the district said although my son didn't receive his OT services 2 x 30 mins a week. That the district said they will only be giving 30 mins make up time not the full 60 mins a week. As they feel he doesn't need it.

She said there is no law obligating them to do so after speaking with their attorney.

Can you guys clarify.

I'm from New York.