As I mention below, the very large 200% increase in college attendance is more likely to suggest that this demographic group has extremely low college attendance rates than that the intervention has an extremely high impact.

If you do your intervention and 2 out of 127 children enroll in a college when you would have expected 0.7, you've tripled the expected rate, but that was easy to do by chance.

In this case, the sample size was presumably half that, around 64.