was the other program you tried JUAIseek?
yeah, you don't "automatically" get better marks for going to selective school.
HOWEVER, when using these UAI estimaters, generally, due to higher competition, your tests will be marked harder and your ranks will be higher in the state.
ie. a person coming first in 4U maths at james ruse, compared to a person comming first in 4U maths in a govenment school will have a higher rank in the state.
This can change the way you use a UAI estimater. That is, say you got 90 in 4U maths test at James ruse and came first. you prolly should enter 98 or 99 for HSC aligned mark. But for a govenment school 90 in 4U maths is problably gonna be 90ish Aligned mark.
This is all up to personal interpretation. I was considering an automatic method of doing this. However, there just isn't enough data between different school out there escpecially after the "class, we failed" news article, lol.
Don't hesitate to ask for help.