I tried in seventh GRADE.
I could never get used to them.
The Big Bang Theory Season 4, Episode 18
Yep, I had to go through
the entire second GRADE...
The Big Bang Theory Season 1, Episode 15
I was only being polite.
Pemberton is a GRADE A weasel.
The Big Bang Theory Season 12, Episode 21
...when I won the Earth Science medal
in third GRADE.
The Big Bang Theory Season 2, Episode 23