My students had to belt test individually. It was time consuming, but I really knew if they had mastered the work. I used 5-7 minutes at the end of class (a 45-minute class), and others had to bring a book to read while waiting. I also had before school time, and a few minutes at the end of the day before bus loading. I often had 10 or more students waiting to belt test. It was on a first come first served basis. Later in the program, I allotted time first to students of lower belt ranks to get them moving along.