Pamphlets on AID are available from the high-school counseling office. We can't give any numbers because AID changes from year to year. Most academic scholarships are for 4 years only, but some can be applied for by transfer students. Most scholarships require that it be applied for. LOTS OF RIP-OFF scholarship searches out there.
Seniors get letters every year.
Check with the academic counselor before you send money. I don't consider a scholarship legitimate unless it's renewable. Real capability in this area takes years and years to develop, and the Internet hasn't been around that long. A good track record is what to look for. What I hope this data has done is to show everyone that there's LOTS of money out there for students willing to search for it, and to meet the criteria is requires.