Solution

39768

First name
Addison Djatschenko
School
Scotch Oakburn College
Country
Age
9

I got 9, 6, 14, 9, 7, 11, 10.
Get 2 numbers adding to 15 e.g. 6 and 9, minus one from the next number and keep doing that, making sure you do not get an answer above 15.