Several high schools in Colorado partner with the University of Colorado where they can take CU courses at their high school. They are the regular collegiate classes and show up on your CU transcript. The program is called CU Succeed. Depending on the school (each school differs on how many classes they offer) many kids have started CU as a second semester sophomore or first semester junior after they graduate high school. And each class is only $250, so you save a ton on those first 2 years of tuition.