Congratulations! What is the selection criteria? Do all majors have this opportunity? Is it mostly for STEM and medical majors?
Thanks! The selection criteria is never officially released. There is a graduate studies office that tracks potential students and invites them to various informational briefings somewhere around sophomore and junior year. I think the GPA cutoff is ~3.7, but it's hard to say for sure. The graduate studies office then gives cadets approval to apply to nationally competitive programs. The process kinda looks like this:
1) Get approval to apply
2) Apply
3) Get awarded scholarship/fellowship
4) Get approval to be released from your duty assignment
5) Go to school!
The nationally competitive scholarships do not require that you pursue a STEM degree, but that is what most people end up going for anyway.
Then there is the Graduate School Program (GSP). Each year a certain number of GSP slots are divvied up among the USAFA academic departments. Historically we're talking 0 to 2 slots per department. The academic departments then rank which of their students would be best to go on to graduate school and one day return as an instructor. This selection process is unique to each department. It also means that there are non-STEM graduate school opportunities. I have two friends studying English Literature at civilian schools right now!
Finally, the career field opportunities. There are a number of career fields that seek to educate their workforce. For example, the Operations Research Analyst career field has a number of slots every year for members to attend the Air Force Institute of Technology. These slots are open to anyone in the career field, so the competition is a bit different.
In short,
Nationally Competitive programs - Cadets compete against other cadets and students from other univserities
Graduate School Program - Cadets compete against other cadets in their academic department
Career Field Program - Cadets compete against other cadets and officers in their career field
You probably noticed that I'm being super vague about how many slots each program has. That's because it changes every year! Right now, it seems that the pendulum has swung towards fewer slots, but it could swing back to an unexpected windfall in a few years!
I wish I could say more about the Medical and Law side of things, but those avenues are completely foreign to me!