The Keystone Oaks school board last night unanimously approved a contract with the Keystone Oaks Education Association, ending 22 months of negotiations.

The new contract, which runs through June 30, 2013, had been approved last week by the teachers union.

It provides annual teacher raises that average 3.5 percent per year, slightly increases health care payments and will increase the amount of time teachers spend in the classroom.

The contract is retroactive to July 1, 2008.

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