Team Qualifications
Basketball rosters are pretty small. To make a team, you need a recruiting video and some serious scouting. A crazy combination of raw athletic ability and a polished set of skills will be necessary. If you're not starting on your high school varsity team, you won't be more than a college basketball fan.
NCAA athletes are students (and they love the term student-athlete, so get used to it). They have to take a full load of classes, not just Star Wars Theory and History of Harry Potter Fanfiction. Some schools have tutors to help hoopsters balance their class loads successfully, but the expectation is that grades will rise and shots will sink. Not the other way around.
All of this craziness means that only 3.7% of high school basketball players will make the jump to college (source), even though there are over 1,900 women's programs out there (source). 3.7 is a good GPA, but not good odds.
Only 349 of these programs are at the Division-I level. Good thing there are also 307 D-II and 442 D-III programs (in 2014, at least—source).
Still want to play college basketball, but can't quite make the cut at one of these higher levels? Well, there are hundreds more NAIA and junior college programs nationally. It's even possible to land a scholarship there, too. Just remember, even for the best athletes, slam dunks of all kinds are hard to come by.
Once you're a full-fledged team member, you also have to stay eligible (source). No one ever said playing college ball would be simple. If they did, fire them. Or, correct them. Or, say nothing. Whatever. It's not really our business anyway.