Conversation so far:
Did Ben Carson attend high school?
Ben Carson attended the predominantly black Southwestern High School for ninth through 12th grades, graduating third in his class academically.
Did anything happen to Carson in high school?
Ben Carson played the baritone horn in band and participated in forensics, chess club, and the U.S. Army Junior Reserve Officers' Training Corps program reaching its highest rank—cadet colonel.

Question: Can you tell me anything more important about his high school life?
Self-contained rewrite: Can you tell me anything more important about Ben Carson's high school life besides playuing the baritone horn?