At our very good public high school, they offer 30 Honors or AP classes. (Some are in topics like AP Chinese, which my kids will never take, LOL). Each is weighted to push the GPA above a 4.00. Our school only allows high schoolers to take one community college (or regular college) course for credit, period.
Why is that? Our California community colleges are woefully underfunded. They can't manage the college kids they have, much less high schoolers. Our high school also offers some fantastic classes- the mathy kids can take AP Calculus AB and BC and AP Stats. AP physics, chem, and bio. That would keep most even HG kids busy.