This is the 5118th most frequent Polish word.
przedszkolach
"Przedszkolach" means "kindergartens" (locative plural form) in English.
Here 'przedszkolach' refers to the locative case, indicating the location where the action takes place, specifically in kindergartens.
Dzieci bawią się w przedszkolach.
Children are playing in the kindergartens.
In this sentence, 'przedszkolach' is again in the locative case, showing where the teachers perform their work, which is in kindergartens.
Nauczyciele pracują w przedszkolach.
Teachers work in kindergartens.
The word 'przedszkolach' here is used in the locative case as part of the phrase 'przed przedszkolach', indicating the location of the meeting relative to the kindergartens.