All right, alright?

Question

I learned in school that "alright" is incorrect and "all right" is correct. Is this true, or are my teachers full of crap? "Alright" is in the dictionary and there's nothing there stating that it is slang/used incorrectly. It just says that it is informal.

I usually type out "all right", but I am just curious.
Can anyone tell me if "alright" is really not a word?
Is it okay to use if someone was to, say, write a novel?

Answer 1

Both are correct.