The Los Angeles teachers’ union on Tuesday announced a tentative labor agreement that “significantly increases salaries,” reduces class size and amps up mental health and counseling services for students.

Under the plan, United Teachers Los Angeles (UTLA) members will see their wages rise by 21%, the Los Angeles Unified School District and the union announced. The agreement comes after a three-day strike last month by the district’s 30,000-member Service Employees International Union (SEIU), representing teachers’ aides, custodians and bus drivers. The strike closed hundreds of Los Angeles public schools.

UTLA members walked out in solidarity but were not part of the negotiation between the SEIU and the district, which reached a deal the next day. The UTLA agreement “addresses years of pay inequity and inflation,” the district said in a statement.

“This agreement with UTLA is a necessary step not only to make Los Angeles Unified the district of choice for families but also the district of choice for teachers and employees,” Superintendent Alberto Carvalho said. “I am grateful that we reached an agreement with UTLA in a manner that reflects the dedicated work of our employees, provides a better academic experience for our students and raises the standards of compensation in Los Angeles and across the country.”

The union called it a groundbreaking meeting of the minds.

“This historic agreement makes significant progress for educators and students that goes beyond the school site and into our communities,” UTLA said.

“With this tentative agreement, LAUSD now has an opportunity to become one of the most successful school districts in the country,” UTLA president Cecily Mart Cruz said in a statement. “We held the line during bargaining on a number of initiatives because educators are the experts on what has the ability to transform LAUSD into a more equitable environment that not only improves students’ learning but also the quality of life for L.A. families.”

The deal, which still must be ratified by UTLA bargaining unit members and the Los Angeles Unified Board of Education, also includes increased funding for school nurses, psychologists and other special services providers, as well as for special- and early-education teachers. Staffing incentives for dual language and ASL programs are also folded in.

“I am thrilled Los Angeles Unified and UTLA have reached an agreement that fairly compensates our incredible educators,” school board president Jackie Goldberg said. “The negotiation process is laborious but critical to ensure our contracts address the needs of our employees. I am thankful to everyone who sat at the table and came to this agreement.”