"Who works in this kindergarten?"

Translation: Kto pracuje w tym przedszkolu?

[Aggafi1]

Shouldn't be kindergarden?

[Jellei]

According to English Wiktionary, 'kindergarden' is a misspelling of 'kindergarten'. The word is a borrowing from German and came to English as a whole, without changing.

[JerryMcCarthy99]

Agreed. "Kindergarten" is the standard English word.

[Margarita726938]

I do not understand, ta przedszkoła is a female gender, why - w tym przedszkolu?

[alik1989]

It's przedszkole and it's neuter.