I did mine through Trident University International (out of CA). It's not a sit in class (obviously since you asked for NYS). But it does consist of an online lab. Most schools I have looked into...
I've never taken the NCLEX, but I did take Paramedic registry, and it was a varied test, like NCLEX where it adjusts based on how many you're getting right or wrong. However, it was also known that...