I went to the KABA (Select Sires) back in 1976. It was a 2-day school and came home and began breeding right away. My son took the ABS school last year and had a difficult time till he began listening to me. Now that aside I had two awesome instructors and only abut 7-8 of us. He had one instructor and over 20 students, big difference, I was taught the importance of little techniques when you encounter different situations, he was taught one basic technique and nothing about what if. If you sign up for a class I would recommend taking it from someone who has bred thousands of cows and be in a class of no more than 7-8 students per instructor.