This is wrong. $yourPoint should be pushed to $classPoints in order to calculate correct average.

Edit: Ok, not necessary to pass.

Your code doesn't pass test
$this->assertEquals(true, betterThanAverage([2, 3], 3));

But you not included your points for the average.

Edit:
I see another comment that its the same :)

Thanks, i'm overcompensating :)

parentheses are not required here

It looks like that's optional, afaik.

Your points are not included in the array of your class's points. For calculating the average point you may add your point to the given array!

why?

Rofl this is the wrong solution :D

your points have not been added to the average

10/10, would code again