sat in usa

mostly pakistnai students give sat here in pak and then got admission in some uni and as got admission they got student visa…

but ppl have usa visa already and they go to us and then they like to study there …they also need to give sat and toefel as foreign langugue…

in pak we have so many institutes and teachers who help preparing sat and toefel…they teach how to get good scores in sat

so is it same in usa…?specilaly in newyork i mean is there institues and ppl who can help u preaparing in sat and toefil?