![did this as our science fair
projects in ninth grade.
did this as our science fair
projects in ninth grade.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
did this as our science fair
projects in ninth GRADE.
The Big Bang Theory Season 11, Episode 13
![but I spent most of fifth grade
with my head in a toilet.
but I spent most of fifth grade
with my head in a toilet.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
but I spent most of fifth GRADE
with my head in a toilet.
The Big Bang Theory Season 7, Episode 2
![I tried in seventh grade.
I could never get used to them.
I tried in seventh grade.
I could never get used to them.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
I tried in seventh GRADE.
I could never get used to them.
The Big Bang Theory Season 4, Episode 18
![Before that, I was in college,
and before that I was in the fifth grade.
Before that, I was in college,
and before that I was in the fifth grade.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Before that, I was in college,
and before that I was in the fifth GRADE.
The Big Bang Theory Season 1, Episode 4
![I was only being polite.
Pemberton is a grade A weasel.
I was only being polite.
Pemberton is a grade A weasel.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
I was only being polite.
Pemberton is a GRADE A weasel.
The Big Bang Theory Season 12, Episode 21