I really doubt that 4th grade parents are holding back for lax purposes. I mean cmon. There are two kids on my son's team that are 10. One is a late June birthday and one is mid July. They are at private school (two different ones) and their parents decided in pre-k to hold back. For the sole purpose of wanting their kids to be the oldest in the class, not the youngest. Can't fault them for that. I would have done the same thing
PS. Their goal in life is not travel lacrosse and a earning a partial scholarship to Hofstra.