Hi Mary Grace,
That really has to be very frustrating to both you and Kathleen. My heart goes out to you and little Kathleen. I would think, if Kathleen has had the same teachers for any length of time, they would know when Kathleen isn't feeling well. I think it goes without saying that Kathleen is a fighter and tries to do all sorts of things that individuals who don't have any medical issues wouldn't, couldn't or have never even tried to do. So to me, if I were Kathleen's teacher, I would know when Kathleen is not having a good day.
I know it is hard to explain the symptoms because they can be "all over the board" so to speak, and can be different on different days and can be different for each individual. That in itself is a challenge.
I make a list of different things I know are an idication that Kevin might be having problems or simply not having a good day. Like you mentioned, there are certain things that you recognize with Kathleen when she isn't feeling well such as the extra drooling etc. I would think the teachers would notice if Kathleen had extra drooling etc. If not, I would wonder why. I question why you have to tell them till you're blue in the face. Aren't they listening? I would make a list of the signs and symptoms that you know cause Kathleen problems and call a conference with the teachers and give them a copy of the list and discuss the situation. I would include the principal since it is obvious the teachers aren't listening. If that doesn't work, there is always the school board. If you have tried to remedy the situation and to no avail, it is time to take it to the next level.
There are some "common" symptoms children have but then they also have their own symptoms unique to their own situation. It is going to be different because not every moyamoya victim has the associated or same co-conditions. Like Kathleen has Down's Syndrome in addition to MM so she is going to have a list of symptoms related only to Down's Syndrome and then her own issues related to MM and then symptoms related to the combination of the two.
Mary Grace, in your post you have listed many of the symptoms you know cause Kathleen problems and what the problems are. I would think that would be sufficient for anyone to know that Kathleen is not having a good day. I think it's time to go to the next level... in my opinion.
I hope this helps. Please keep us posted on your progress in getting Kathleen's symptoms across to her teachers. I'm actually appalled that you have to keep telling the teachers over and over again about Kathleen's symptoms. That's not only baffling and frustrating it's not okay.
Hugs,

Lore