The Washington Education Association, the state's largest teachers union, says it has gone to court to contest the ballot title and summary of a charter schools initiative.

The WEA is opposing Initiative 1240, which would allow public charter schools to teach students using unconventional methods, and hire nonunion employees.

The court challenge was filed in Thurston County Superior Court and contends the ballot title language is inaccurate and fails to fully describe the initiative, according to statement sent out by the WEA.

The initiative was not filed until late last month, which is unusually late because it gives backers little time to collect the required signatures of at least 241,153 registered voters by the July 6 deadline.

I-1240 backers have raised $325,000 this month, including a $200,000 contribution from Microsoft co-founder Bill Gates.