Here is my plan to possibly go around the early entrance rule. DS4.5 is eligible for K entry this fall because his birthday is couple days before the cut off so he will likely be the youngest in class and we are unsure what will happen once he goes to K but at least the nature herself skipped him when she made me give birth 3 weeks early (otherwise he'd had to wait another year to go to school). DS3 (just turned 3) is further ahead in many areas than DS4.5 and still more than 2 years from K. But he also has some other issues that we're working through so actual school setting right now would not work at all for him. BUT for the future if we conquer the other things, my plan for advancing his early years if we need to is homeschooling K & 1 (early) and then put him in 2nd grade when really he should had been in 1st grade but since he would have 1st grade officially behind him (homeschooled) as long as his academics would match or be beyond level, the age wouldn't matter anymore (or we might do it later on and base his entrance on his current homeschool level at that point). But not sure if homeschooling would be an option for you and if this would work in your state?