After authorizing a strike late last week due to stalled contract negotiations, teachers in Lakeville are planning to rally outside the district office before Tuesday’s board meeting.

Education Minnesota says the unionized teachers also filed their formal intent to strike on Tuesday, just three days after the group announced an overwhelming vote in favor of a strike.

Because the state requires a 10-day strike notice, the earliest the teachers can walk out is May 10. A mediation session with the school district is scheduled for May 6, and while the teachers say they’re open to moving that up, the district says that’s the earliest date available through the State Bureau of Mediation Services.

The district’s current school year ends the first week of June but Lakeville Area Schools said it will have discussions at Tuesday’s board meeting and provide details to families when a strike preparedness plan is finalized.

Union officials say they’re seeking a “substantial” pay raise, plus more affordable health care and other benefits. The district says it is facing financial challenges and has already offered a raise in line with the latest funding boost provided by the state.

Additionally, the union opposes language that would allow the district to unilaterally move teachers between buildings, grade levels, and subject areas.

“Lakeville teachers have made it clear – we’re ready to strike for what we need for the first time ever,” said Johannah Surma, lead negotiator and an English Language teacher at Oak Hills and Orchard Lake elementary schools. “The school board has the power to avert a strike. We’re looking for a swift and fair agreement with needed raises – without forced transfer language – so we can continue to work our essential jobs with full faith in our district.”

Tuesday’s rally outside the district office is scheduled to start at 5:45 p.m., ahead of the school board meeting at 7 p.m.