Do you know if there are lots of rules at Nishmat? Are they the type that tell you what you can or cannot wear in your free time? Or do they treat us like adults
You’re expected to maintain a very basic level of tznius during class time, as well as in the public areas of the school outside of class time (the dorms and classrooms are all in one big building, and there are several staff families that live in the building as well, so there could men walking around at any given time even after the male teachers have gone home for the day). They don’t concern themselves with what you are wearing outside of the school grounds.
Shana BaAretz does have more rules overall than Tochnit Alisa, just because the girls are younger and most haven’t lived away from home before and it’s a safety/liability issue (Tochnit Alisa girls are college/post-college and have been living independently). But it’s less about keeping you in line in a religious sense and more about keeping you alive and unharmed and accounted for. (If chas v’shalom there’s another war or spike in terrorism, the rules are temporarily tightened.) I don’t know exactly the full extent of their rules, though.