<p>^ Wuhandrummer: In the last two years, they have also awarded 8k and 11k (used to be called the “collegiate” and “trustee” scholarships).</p>
<p>^ jozuko: The Singer and Stamps academic scholarships are by invitation only and go to some of those students who are awarded the 20k or 24k merits. Over the course of 3 weekends in late Feb / early March, some 350+ students are invited to campus to compete for perhaps 100 +/- Singer awards (full tuition only). Two of the weekends are for ED/EA applicants, the 3rd is for RD applicants. Of those receiving the Singer another 6 are chosen to speak with Mr. Stamps for a chance at the true “full ride” - tuition, room/board, fees, and a small stipend. I believe last year there were 4 Stamps awarded. IllinoisMom93 would know for sure 
Many of those who attend an S/S weekend, but don’t receive either the Singer or Stamps, are awarded an additional ~4k in the form of a Gables scholarship. The participants learn the decisions about a week after returning from their respective weekend.
Hope that helps…</p>