When I was a cycling counselor - my 2 groups did 3 rides short of 15miles, then 2 at 25miles, 1 at 50miles. A 6 week program.
We had one scout (for the 50miler) who had not attended the short rides but the parent demanded his son be allowed. We had (stupidly) not included a requirement for the shorter rides before the 50mile ride. He caused a crash in the first 5miles and I sent him home in one of the SAG vehicles, later writing a terse letter to the parents. Luckily no serious injuries.
Demanding parents are beyond a pain in the ass.
edit: The 50mile ride included almost 1800' of elevation drop and was gorgeous descending thru the Santa Cruz mountains.
