
I went to school for half my life.
I have a DOCTORATE.
The Big Bang Theory Season 8, Episode 20

I have a DOCTORATE
from Indiana University.
The Big Bang Theory Season 12, Episode 5

Your DOCTORATE is in neurobiology.
I fail to see the distinction.
The Big Bang Theory Season 4, Episode 24

Is it any wonder
he doesn't have a DOCTORATE?
The Big Bang Theory Season 4, Episode 18

Bernadette got her DOCTORATE.
The Big Bang Theory Season 10, Episode 11