Aural for Grade 2 isn't that difficult.
A- clap the beat and say it is in 2, 3 or 4 times.
B- sing 3 phrases as echo
C- listen to the phrase twice and tell the pitch or rhythm has been changed
D- answer question about soft/loud playing or smooth/deteched notes , and tempo changes
Good luck to your son!
First, reach the exam venue at least 15 min beforehand.
Remember to take the book for the pieces, admission form and the ID doc with photo + English name (such as passport or Student handbook)
He is allowed to adjust the height and the position of the stoll.
You will get the result about 7 weeks after the exam.