
but I spent most of fifth GRADE
with my head in a toilet.
The Big Bang Theory Season 7, Episode 2

Before that, I was in college,
and before that I was in the fifth GRADE.
The Big Bang Theory Season 1, Episode 4

In the first GRADE, my friend Rosie and I
made a pact to marry Bert and Ernie.
The Big Bang Theory Season 3, Episode 5

Oh, tenth GRADE,
and he's just growing
like a weed.
Breaking Bad Season 2, Episode 7

I was only being polite.
Pemberton is a GRADE A weasel.
The Big Bang Theory Season 12, Episode 21