The Flopper . . .

[jec]

I had a little one who did something very similar. Drop off time was drama and tears and melt downs. I chatted with both parents as they did drop off and pick up depending upon who was done work first that day ~ I made them aware that it was affecting their little one's day....and everyone else's as well by watching the meltdowns. It will make her day better if they give her a hug and tell her to have a great day as getting out of the car. I meet them at the front door and bring her in and we wave good bye and tell them to have a great day. Mom or Dad never came in at drop off. Few tears at first as the little one thought if she did then they would do what she wanted. it didn't take long for her to pick up and drop off became a breeze. Same at pick up. Unless they were going to be late, I had her go to the bathroom, put on her boots and jacket and wait by the door for mom or dad so she wasn't running around the playroom as they ran after her to try to get her dressed for home time. If they were late then they would call. I would take her hand when they came to the door, gave them her home bag and gave them her hand and told her bye and see her tomorrow. Again, only a little while adjusting and she got used to it.
Good luck tonight ~ not easy talking to parents who feel this behavior is OK and or don't know how to handle it. Who knows, they may end up thanking you for the help!
Let us know how it goes