BISMARCK, N.D. — A state judge has dismissed a lawsuit filed by opponents of the Common Core education standards.

Tioga Republican Rep. Bob Skarphol and three others sued last year to bar the state from paying membership fees to an organization that supports the federally backed standards.

The opponents said in the lawsuit against state Superintendent Kirsten Baesler and other state officials that North Dakota entered into an illegal agreement when it joined the multistate Smarter Balanced Assessment Consortium.

State attorneys disagreed. Judge David Reich has sided with them, saying North Dakota didn’t break any state or federal laws.

The state is developing its own math and English standards anyway. Baesler sent a letter to the consortium last month notifying the group that North Dakota is withdrawing.