It may seem far off from where you are now, but if a child will take APs in high school, he should be in a bit of summer-work habit. DS15 will take two APs and an honors pre-calc in the fall, and all three have homework he needs to do now. The purpose, they say, is that there is a certain amount of curriculum to cover in the school year, and they need to be ready to jump right in in August.

Because he had a big issue with homework not getting done or not turned in last year, I am strongly encouraging dedication to this task this summer. (And i don't mean worksheets, I mean homework that was central to the course, like essays for a writing class) DS cupped his hand to his ear and said "what's that I hear? Is that a helicopter?" Thanks to Howlerkarma, I brought up the concept of scaffolding. That actually was well-received.