Just curious, what is the holding back cut off point? If you hold back 1 year and your kid is still are not a stud, how far back does it become super lost? 2,3.4 years? Of course their grades should be through the roof doing 8th grade over and over but is there a point where even the superdouche parents have a little pink polo shirt and kaki short angel over their shoulder saying OK, lets try golf.... lacrosse isn't working.
Not all children are held back so dad feels better about himself. Some have learning disorders that need additional time to either develop executive skills or simply take longer to learn or figure school and athletics out. If parents have the means to send their child to a private school and get a better education why bash them?
By the way, once in high school it doesn't matter how old you are as you can play as high as your ability and effort allow.
