I love this idea. It reminds me of a program that Texas did called the Texas Tomorrow Fund. Essentially when I was a baby, my parents locked in the tuition prices of a public college education for me in my future. Now all of my tuition costs are paid for by this program and provided a lot of financial relief for my parents and I now. You asked for possible enrollment type data, since I feel this program is kind of similar, I found a 2013 report with a lot of data that is hopefully useful for you. http://www.tgtp.org/docs/TGTPAnnualReport2013.pdf
Here's the general website with information on the program: http://www.texastomorrowfunds.org/
I really like this idea. One of my best friends in college struggled all through high school and struggled to get into college. She put through these societal pressures making her feel like it was the right path. She realized that what she really wanted to do was cosmetology school, and now she excels at it. Another one of my good friends went to trade school to be a car mechanic. There are so many options besides college and I think financial aid to those options are important as well. Just another thing to consider.
I love this idea. I would have loved this in high school. I felt as if I didn't have enough opportunities to get merit-based scholarships for my work in high school. I think it would even be awesome to have this extend into College education. Say getting a 4.0 first semester gets you more money in scholarships, being president of a club gets you another small scholarship, etc. These small achievement based scholarships remind me of the way video games can motivate goals through achievements, points, and upgrades. This article explains more in depth the psychology behind it. http://www.thinkfeelplay.com/theory-of-gaming-motivation/ I think this methods taps into those motivators of achievement, satisfaction, and recognition. I think its a great idea to utilize what we've learned about human psychology and channel that into education.