This is the 887th most frequent Croatian word.
državna
"Državna" means "state" or "national" (pertaining to the government or country).
In this sentence, the word 'državna' is used as an adjective to describe a school ('škola') that is managed or funded by the government.
Državna škola nudi kvalitetno obrazovanje.
The state school offers quality education.
Here, 'državna' modifies 'vlast', meaning authority or power, indicating its affiliation with the state or government.
Državna vlast donosi nove zakone.
The state authority enacts new laws.
In this context, 'državna' is an adjective describing the flag ('zastava') as being official to the state or country.