"He hana kula kākou"
This translates to "We have school work," which would include homework.
Here's a breakdown:
* He - (definite article) There is, there are
* hana kula - school work
* kākou - we (inclusive)
You could also use a more specific phrase depending on the context:
* He hana home kākou - We have homework (literally "We have home work")
* He hana hoʻomanaʻo kākou - We have assignments (literally "We have remembering work")
It's important to note that Hawaiian is a nuanced language, and the most natural way to say something often depends on the specific situation and the intended meaning.