Rewarding students who graduate early from high school

The Mayor of Chester, CT has proposed giving community college scholarships to high school students who graduate a year early.

This is a brilliant idea. The average U.S. public school spends over $8,000 per year per student. States should give students who graduate a year early from high school, say, $5000. This would reduce state expenditures and motivate students to do extra work in high school so they can graduate early.