Summer music camps are great for teenage musicians. They give them instruction during the summer and a chance to compare themselves to other students from other schools. Check you local colleges for programs. Sam Houston State University is popular in the Houston area. Other schools in Texas have them as well; Baylor, North Texas State, Texas State. Around the country there are many camps. Berklee in Boston has some wonderful programs!
I teach lessons in the summer and I find my students then are much further advanced in the fall. Fall is when most region and area auditions occur, so summer is our time to prep scales, strength/endurance, flexibility so the audition music is more achievable.
Let me know what summer music camps are available around the country. Leave a comment below and it will add to this blog post. Thanks, Larry