Funny, I'd say also 5th or 7th was my worst.
5th grade I had a teacher who, well, I've taken a college course easier than her class (though it was a summer course, I'd still estimate her level at about tenth or 11th grade for most people, middle school for me). Students who survived her class, needless to say, had no academic trouble for a long time.
The work she gave made me stressed.
Stress made me start getting migraines.
Stress made me catch a severe form of the flu.
Stress made me stressed and tired.
I threw up one evening in late November/early December, and stayed out the next morning was out until Christmas break, came back again, left for a week in January, an finally made everything up while the rest of the class went on a week long field trip (what point this served I do not know).
Afterwards I was taken in for extensive testing diagnosed with AS, juvenile migraines, and possible several other things I don't know about.
In seventh grade they prescribed me Zoloft because I was going to school and they didn't want me to get depressed.
But oops. . . the Doctor seemed to think that AS and ADD were the same thing and treatable in the same manner.
I finally snapped in the fall.
I left social studies in a tizzy, angry at a classmate (he wouldn't let me do our presentation on some Conquistador as a time-machine scenario), drew pictures of swords impaling his body(still in my permenant file I learned in ninth grade, must get ahold of them and destroy them somehow), and then tried to go back to class and show them to him.
I was taken into another room where I started seeing colors (perhaps a result of a migraine), and like Don Quixote, took it into my head that the chairs were my bother and one of his more obnoxious friends and began attacking and gnawing on them.
They took me away, gave me some paper to shred and called my mother.
She took me home, and tried to figure out what happened.
Oops, overlooked side effect bit: "Zoloft may cause psychotic reactions, violent outbursts, paranoia, and halluocinations in individuals with Asperger's Syndrome."
Since then I've encountered others online with similar experiences.
Even in 5th grade (especially in my makeup work week), and after I before the Zoloft took effect in 7th, I had some highlights.
Minor issues throughout elementary school, such as one that comes to mind in 3rd grade (when I got a word wrong for my first time ever on a spelling test). Eight and ninth could have been better, but I had some great teachers.
I really hated PE classes throughout (got exemptions to work with the PT in late elementary and ALPs in high school), and despised the after-school program social sports and stuff, but that no longer looms as large as it once did for me.
By tenth grade I was pulling myself together.
My school experience seems like a positive utopia compared to most people here.
Elementary school I'd happily repeat, maybe even middle school.
High school I've started to recognize the wisdom of Salinger, so not so sure about repeating that. Ninth grade certainly at least.
It seems like my understanding of life and my enjoyment of school are in inverse proportions to each other.
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I'm not insane, I'm just reality impaired.
"The difference between genius and idiocy is that genius has limits." -Albert Einstein