I dropped out of high school. I was at a standard public school at first, but ended up missing 113 days in sophomore year due to refusing to go/pretending to go but not going/going but walking right out the back door and returning home, etc.
After that I went to an alternative school for a year but I eventually stopped attending that too. I never officially dropped out, I just stopped going. I got my GED a few years later and managed to go to community college for a while, but eventually the agoraphobia got really bad again and I stopped doing that too. I only have one more class to take for my associates but currently have no ability to finish.
Since high school, it's been more or less the same feeling: a generalized inability to deal with anything. I feel like I'm constantly being weighed down by a ton of bricks and any additional weight at all will crush me. The only thing I can do is hide away from everyone and try to avoid any more emotional burdens. Even a stone-faced look from a stranger is enough to ruin me for a whole week. Even knowing I have to make one important phone call is suffocatingly horrible, more for the fact that it is hanging over me and adding to the weight than any fear of making a call.
The easiest things in the world that most people wouldn't even think twice about (cleaning off a table, checking the mailbox, washing a bowl, taking a shower) are downright herculean to me. Now compare those things to having to write an 8-page essay by a deadline and study for a test that makes up 20% of my grade, turn in a longterm project for another class, and maybe even stand in front of the class and do a presentation.
My exact reaction is something like "LOL NOAP"