I'm trying to find this partial fill that is still being written from the angst meme.
It only has up to part 2c done.
It is an AU where Kurt is much younger than everyone else, he skipped a lot of grades. But no one but his dad (obviously), some of his teachers (Will), and Blaine know that he is younger.
One day his bullies hurt him really bad ( I think he gets thrown down some stairs?) and it ended with him in a coma right now.
Eventually (based on the prompt) everyone is supposed to find out how young Kurt is and the bullies/parents of bullies/teachers/etc. feel really bad and end up having to try and make it look like they had nothing to do with terrorizing Kurt.
I really hope that helps and that someone can help me out in my search.