I'm sorry. My child has had moments like that and it is very stressful. When it was school related, the worst behavior was right after school ended and then the behavior usually was better as the evening went on.
I agree that it sounds like it could be a growth spurt (the hunger part). If so, that is normal.
However, I really also think it sounds like a doctor appointment is in order to figure out the allergies and if there may be another issue. She may need to see a specialist to have a plan for treatment. Although the educational fit also may need to be addressed, I think if she feels crummy, everything else is going to be harder than it needs to be.
It may be a combination of things, but I think a doctor visit would be my first priority. Good luck!
