Our public HS offer dual enrollment with the local community college. It is usually an honor or AP class at the HS and it’s just a matter of registration and paying for the fee. No additional coursework or test. I’ve always registered and pay because If he does end up going there or a local school that accepts those credit, it cuts down the required courses. If the $300 is is not a burden, I would pay up front with a possible bigger saving down the road. If I add up all the credits that he has when he graduates, it equates to about an associate degree.