
Which brings us to 10th GRADE.
The Big Bang Theory Season 2, Episode 12

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

I didn't want you ending up
with a bad GRADE and get discouraged...
The Big Bang Theory Season 6, Episode 6

Mrs. Wunch in fourth GRADE.
The Big Bang Theory Season 9, Episode 23

Sixth GRADE. But I wore a sport coat
and carried a brief case so...
The Big Bang Theory Season 9, Episode 15