The school subject you're looking for is "History." It has 8 letters, and the 5th letter is "l."
neon, pony, page, cage, gone
abdomen abysmal
The only capital letters which produce the same letter after being rotated 270 degrees are the letters 'O' and 'X'
dreidel
velvet
soldier
My favorite subject in school is PE.
testes
Bern (Switzerland)
Silverware is 10 letters, but not the ones you need. How about chopsticks?
Being. Began
Forty Love