For players in 21, 22 and 23. The NCAA Academy is allowing kids to self nominate. I attended with my son last year and it was a great opportunity. They pay for the parent and kid if selected. This year it is in Utah,last year GCU. Problem was last year they sent the info to the email of the kids. Many kids do not check email as adults.
https://www.ncaa.com/collegebasketballacademy
https://www.ncaa.com/collegebasketballacademy