Testing is usually scheduled every month to every other month, depending on student progress. Even if you are not testing for a promotion, it is customary to attend testing and support your fellow students. Also, it is recommend to participate as a "checking test" even if you are not testing for promotion as well.
Check our schedule, for up comming testing events. Family are encouraged to come and observe. Keep in mind however, this is not a demonstartion or recital, but instead an opportunity to measure the progress of the student involved in the testing day.