if you're in the market for a D1 program with athletic money, yes , the prime time years are 9th and 10th grades, specificaly the 3 summers.. begining with the summer before 9th grade, the summer between 9th and 10th and summer after 10th.. it's my opinion, im sure others may differ and there may be examples that dispute it but for the majority of players that advance to play in college (D1) they verbal in one of those three years