To give a specific example, I've always thought that community involvement is one of those developmental stages that happen later in life. Bill Gates is a great example: obviously a "leader in business, innovation and politics", who went from active, principled disdain towards all charity when he was younger to the world's biggest philanthropist today. Whenever I see community involvement coming from a high schooler, I always "blame" parents, college admission coaches, church, etc.
Similarly, serious commitment to more than one sport makes me think "ambitious parents" and "affluent" rather than "drive". I just don't buy that a high-schooler, all by him/herself, has the wherewithal to manage multiple athletic training programs. I did serious ballet before I went to college, and let's face it, while I did all the sweating, my mother gets more than half the credit.