Should you be one of the lucky scholarship recipients, my advice to you would to remain humble as you will soon be finding yourself surrounded by some of the admirable people you have ever met.
Nice to read someone finally use the word "humility" and refer to "admirable" people.
To the point about team sports, if the Boards are looking for a predictor of future success in xROTC then team sports are a good place to start. The applicant will probably be in decent shape and can get along with peers and coaches. Leadership? Being the Captain of a team kills two birds with one stone. It would make perfect sense that a high % of xROTC/SA classes were team captains.
However, it is not axiomatic that they are predictor of ultimate success, nor are they the only means of displaying the attributes of physical fitness and leadership.
DS #1 (AROTC MS III) played Tennis throughout high school. One year varsity with letter (would've been two but spent Junior year abroad). He was Concertmaster (first chair violin) in city youth orchestra. He was also very active on academic teams, which he also captained. I used to think that hockey parents were bad.
The bottom line is he did what he loved, did it in front of large groups, was willing to put a target on his chest, and he was partially responsible for the results of his team. The bottom, bottom line is that he didn't sit around on his a$$ during High School. That is the one common denominator to all of these cadets and mids.
I know for a fact that he was humble enough (and humility is his weakest suit) to realize that certain leadership skills and experiences that were lacking in him. He never captained a sports team nor did he manage a restaurant crew. He never did squat for his fellow man. He appreciated that there were skills associated with those roles and that ROTC would be a way to develop them.
Pima, you are spot on that college ain't high school.
When DS #1 went off to college, I told him that the scoreboard is reset to zero. I reminded him that none of his fellow cadets would really care about his or anyone else's accomplishments, especially the programmers, the enlisted guy who did two tours in Afghanistan with a wife and kid at home, or the scrawny Asian kid who unloaded trucks at his parents' grocery store at 6:00am before heading off to school.
To the OP, do the TKD unless you love it and especially don't do it at the expense of something you love. Just an opinion.