20
Back to School ๐ซ๐
(imgflip.com)
Wtf is the y axis here
They didnt have that lesson yet
No matter what the answer is, this is still stupid and not how a bell curve (especially when it's complete with population percentages) works.
Stress levels
I think you failed algebra
The summer slump is real. This is very meta as it is direct evidence of the effect.