USC tuition

Looking for an answer:
My daughter is going to apply for USC along with few other private universities. I did the net price calculator for USC and seems like we will be paying the full tuition. She got offers of grant/scholarships b/w $18k-20k from other schools when I used the same calculator on their websites. Does anyone know why USC estimated full tuition in her case?

Are those schools offering $20k offering it as merit aid? USC gives a lot of its merit aid to NMF.

Schools get to do anything they want with their own money.

What is NMF?

National Merit Finalist

My daughter is not one of the NMF. Her UC GPA is 4.0 and SAT superscore is 1400. Not impressive but she just wants to try her luck.