Answer:
Describes universities like Harvard and can be poisonous.
Useful tool for who in darkness dwell. Within you, corrupting like a deadly spell.
Some try to hide, some try to cheat. But time will show, we always will meet. Try as you might, to guess my name. I promise you'll know, when you I do claim.
Put into a pit, locked beneath a grate, guarded through the night, yet it still goes out.
What can be swallowed, But can also swallow you?
It's what light turns into in the night
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?