
The good news is I'm grading on a CURVE,
so you're pretty much guaranteed a C.
The Big Bang Theory Season 8, Episode 2

All right,
I will admit to a bit
of a learning CURVE.
Breaking Bad Season 2, Episode 5

And this because I like
the CURVE of her ass.
Game of Thrones Season 3, Episode 3

there was a learning CURVE,
The Big Bang Theory Season 10, Episode 5

Now assuming the left side of a bell CURVE
peaking around the present...
The Big Bang Theory Season 4, Episode 1