The Washington state Supreme Court is set to hear argument on whether the state has met its constitutional requirement to fully fund K-12 education.

Tuesday morning's hearing is on whether the state should still be held in contempt for lack of progress on satisfying a 2012 ruling that found that school funding was not adequate. Lawmakers needed a funded plan in place this year ahead of a Sept. 1, 2018 deadline the court had set.

The plan approved and signed by Gov. Jay Inslee earlier this year relies largely on an increase to the statewide property tax that starts next year. The tax increases from $1.89 to $2.70 per $1,000 of assessed value, with the increase earmarked for education. The plan — which keeps in place local property tax levies but caps them beginning in 2019 at a lower level— will ultimately raise property taxes for some districts and lower them in others.