Coloradans have said no to higher education taxes, voting down Proposition 103 by a two-to-one margin. There was good reason for that decision. Total per-pupil spending in Colorado has more than doubled since 1970, even after accounting for inflation. The same is true at the national level. Over that same period, student achievement at the end of high school has stagnated in math and reading and declined in science. So raising taxes has a long record of educational failure. Surprisingly enough, lowering them actually works.