In the sentence,
"My school requires the following: a resume and a good grades."
Can I use a colon? I realize that grammar rules require an independent clause before the colon. Is, "My school requires the following" an independent clause?
My school requires the following is a grammatically complete sentence, and so is fine to be used before a colon.
However, it may flow more naturally if you choose to omit a colon entirely.
My school requires both a resume and good grades.
(Note the removal of "a" from "a good grades")