This is the 8731st most frequent Russian word.
пермский
"Permian" or "related to Perm (a city or region in Russia)."
Here, 'пермский' is used as an adjective to describe the region 'край', indicating its origin or location related to Perm.
Пермский край знаменит своими природными красотами.
The Perm region is famous for its natural beauty.
In this sentence, 'пермский' describes the museum 'музей', specifying its association or location in Perm.
Я посетил пермский музей искусства, и он мне понравился.
I visited the Perm Art Museum, and I liked it.
The adjective 'пермской' modifies 'школе', defining it as being located in, or affiliated with, Perm.