I think we had one sprinter from our HS team run at the collegiate level and that was it. We had enough talented kids that many more could have run, but there was never any encouragement from our high school coaches or athletic department to pursue the next level. There were a few coaches that encouraged the boys to do so, but I never had a single high school coach ask me if I wanted to run in college.
It's made me handle things differently for the kids I coach. I think this year our program has 7 distance runners , 4 sprinter/jumpers, and 1 thrower competing in college. The high school I coach at is much bigger on encouraging kids to try collegiate athletics than where I attended high school. We probably have 15-20 girls continue competing at the collegiate level with each graduating class.