[Coachdad]

You cannot sign during your JR year. You can however, commit. But a commitment is just as good as your word and really worth nothing. The big thing about committing is that it has changed from years past. If you give a verbal commitment to one school, most schools will stop calling and will not offer.

Therefore, it is best NOT to commit unless it is your dream/top school. Which in that case, commit and get it out of the way.

Schools will NOT hold a spot just because they have offered scholarships. Schools can offer as many scholarships as they want. Most of them will hold a spot for their commitments.

You are correct in the fact that they can withdraw an offer at any time. If they offer 3 QB's and 2 commit, then they may withdraw the 3rd offer.

My son got four more big time offers after committing, it probably depends on who you are, but as a rule of thumb the previous poster is probably right.