If only more agencies would implement the "Provisional Pass" which GUE does (did?) in Fundimentals. This recognises that practice is required, preferably mentored, so a student can properly master those skills. An assessment, i.e. test, would prove that the student's now met the skills to pass.You would think that, but I have sadly learned its far from true. One of the most famous cave instructors in the world puts out horrific students nowadays. He was warned 10-12 years ago by a group of instructors and former students that there were some issues, but he didn't listen. He's actually still teaching now and I firsthand have seen his students in the water. We're talking about people coming out of cave and technical classes with barely a frog kick. Some instructors are past their prime, some just don't give a crap and want the money, but even more commonly are instructors passing students with subpar skills based on the assumption that they're "good enough" and someone else will "work out the kinks in the next class."
Alas a lot of the courses don't allow for more time without pushing the student back to retake the course.