Male, bowling average: under 100, competitive league play

In 2014, there were only 34 men in the entire country who bowled at the NCAA level, and that was on just two Division-II teams (source). You have to be the elite-iest of elite bowlers to beat odds like those. If you're a young man in high school playing on a league and your average score is less than 100, best to not even dream about it. Don't even think about dreaming about it. It ain't gonna happen.

Female, bowling average: 100, recreational league

Well, things are looking up if you're a girl playing on a league, but if you only put up semi-decent numbers and don't play competitively, it's likely you'll be joining the other 49,400 high school bowlers who don't play at the NCAA level.

Female, bowling average 150+, competitive league

Prospects are starting to swing in your favor. You compete at a fairly high level and your scores are respectable, but they may not be high enough to grant you access onto a Division-I team. Still, with persistence and hard work, an NCAA career might be in your future.

Female, bowling average 165+, competitive league

Now we're talking. You play in a tough league against competitive players and you have a winning record. Your average scores tip the scales above 165. You've got a nasty curve ball for a strike. Now, if you can only keep your grades up, you've got a really good shot at getting into a collegiate bowling program.

Female, bowling average 180+, competitive league, national tournament winner

Have you made a name for yourself on the bowling circuit already? Have you taken home awards and trophies, not only for league championships, but also for singles matches? Have you consistently scored above 180 in the majority of your games? Yes? Well, looks like you're a bowling shoe-in for a top Division-I program (source).