CRI or genex does a lot around the midwest. I took the class in Ames IA at an ISU farm, spent 80-90 % of the time actually practicing breeding on market heifers and old cows.
Depending where you are located K-State has a class in Manhattan. It is put on by ABS and is a great place to go. I liked it alot and learned alot was over 90% in breeding this spring.