I think you perhaps meant to be pedantic and ironically trite. But imagine being 4 years behind when you hit secondary/senior school. Either the child has to a

I think you perhaps meant to be pedantic and ironically trite. But imagine being 4 years behind when you hit secondary/senior school. Either the child has to adjust and catch up (but it's a /lot/ to catch up), or the school system has to adjust to accommodate (which is far from easy).