SORTING HAT
Albus Potter.

He puts his hat on ALBUS’s head – and this time he seems to take longer – almost like he too is confused.

SLYTHERIN!

There’s a silence.
A perfect, profound silence.
One that sits low, twists a bit and has damage within it.

POLLY CHAPMAN
Slytherin?

CRAIG BOWKER JR
Whoah! A Potter? In Slytherin.

Harry Potter and the Cursed Child - Chapter 1 :
See this quote in the Pensive -