(CNN) Chicago teachers have voted to accept a tentative agreement, their union said Friday.

"With 80% of schools reporting, members have voted 81% yes to ratify the new contract with CPS (Chicago Public Schools)," the statement says.

Some of the gains of the new contract highlighted in the statement "include, mandatory class size caps and enforcement, language forcing CPS to comply with special education laws and regulations, sanctuary school protections for immigrant and refugee students, and support for thousands of homeless students."

"While today most schools have a nurse barely one day a week, the contract will provide schools with a nurse and a social worker in every school every day," the statement says.

Chicago Teachers Union President Jesse Sharkey called the contract, "a powerful advance for our city and our movement for real equity and educational justice for our school communities and the children we serve."

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