Afjrotc C/Tsgt. To which SNCO?

The next grade above TSgt (Technical Sergeant) is Master Sergeant (MSgt) in the active military USAF. The active duty AF grades of MSgt, SMSgt and CMSgt (Chief Master Sergeant) are all considered Senior NCO's (SNCO). So you should be looking at Cadet Master Sergeant.rather than Cadet Senior Master Sergeant.

thats up to your high school

there are no regulations concerning AFJROTC promotions

every single school does it differently

you wanna know the answer, then ask your instructor, they are the ones who make the rules

at my school, they gave everyone a test at the start of the school year, how well you did on the test, determined what rank you were

no one was demoted based off the test, but you could go from corporal to capt based on scoring high enough