SACRAMENTO (CBS13) — The Superintendent of the Sacramento Unified School District is asking union leaders for a mediation in hopes of avoiding a strike.

Jorge Aguilar sent a letter to the Sacramento City Teachers Association, requesting a meeting on Monday.

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The union announced plans to strike this Thursday over alleged violations of a collective bargaining agreement with the District.

The strike is expected to last one day.

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The District says it has been preparing for the strike and prepping replacement instructors.