Did you find any improvement yet? I have found leaving at the same time highly effective for my often late last to go. I can’t charge a late fee, because I extended my hours just for them knowing they may be a tad late here and there, but they pay 5 days when the child only comes 4, so it balances. In the last week I had my kids in coats ready to go twice, and once I had a meeting right after and I had bag in hand, babysitter was in the hall when the parents arrived. Each time I just smiled and said, ‘oh, I’m headed to x’’. But the last 2 days they picked up early or on time.