Biggest factor in college admissions is how well you do in high school academics. Be sure to complete a well rounded base high school curriculum, plus academic electives of your interest. See http://talk.qa.collegeconfidential.com/college-admissions/1995563-faq-high-school-college-prep-base-curriculum.html .
For nearly all high school students, do sports because you like them, but do not expect them to be much help in college admissions. Basically, sports can be one of:
- Not considered by many moderately selective schools that admit by GPA, rank, and/or test scores only.
- A typical extracurricular that does not differentiate between you and other applicants.
- An extracurricular that does provide a bump for you versus other applicants with similar academic credentials. This means state or national level award or achievement.
- A way to get recruited to play for the college, but that obviously comes with strings attached. Some colleges will bend their admissions standards considerably for recruited athletes.
Nearly all high school athletes will be in one of the first two categories. Getting into the latter two categories is rare and should not be expected or depended on at this stage.