The court on Monday upheld a lower court’s ruling that Shawnee Mission, a wealthy district in Johnson County, waited too long to intervene in a lawsuit brought by four other school districts in 2010.

Wichita, Hutchinson, Kansas City and Dodge City districts contend in the lawsuit that current school funding in Kansas does not meet a state mandate to provide suitable school funding.

Shawnee Mission argued that the four districts and the state could not adequately represent its interests.

The Wichita Eagle reports the court agreed that Shawnee Mission’s interests aren’t adequately represented said the district should have sought to intervene earlier.