Hi, my DS is a late June baby & started K as a young 5. He skipped 1st & is now finishing 4th grade. It has not been an issue at all academically. Socially it took him about 1/2 of 2nd grade to make some good buddies. I do not see that he significantly less mature than his classmates now though he can be too sensitive & adamant in his views. Some of that might be personality over age.
His future HS has a great program of AP, dual enrollment & other options so I think he will find ways to stay busy until he's ready for college.
I did a research paper on acceleration and most articles are in favor despite the negative views among schools & some parents. Just last weekend, we had SIL's sis comment that "oh, don't rush too fast through childhood". I think he's doing great but comments like that are annoying.
