Why did Jacob drop out of school?

Well, most of Eclipse took place over the summer.

As for Breaking Dawn, I have no idea, I didn't really pay attention, but I guess there was no mention of school, and he was always doing other things.

It diddnt dirently say that he dropped out , but we can just assume that if he did, then if toi were in his case , toi would too.
When toi transform into a Supernatural creature with the circumstances of a vampire returning to hurt the ones toi l’amour then maybe school would not be your haut, retour au début priority.
And also what cassie said, summer holidays and all that tiome inbetween.