ANN ARBOR, Mich. (AP) — Graduate students who teach at the University of Michigan returned to classes Thursday after voting to end a strike.

The Graduate Employees’ Organization, which represents about 2,000 students who teach or assist, said it achieved “critical progress” on child care options during the coronavirus pandemic, COVID-19 testing protocols and concerns about campus police operations.

The vote Wednesday was 1,074-239, the union said. The strike began Sept. 8.

The deal ends legal action taken by the university, which sued this week to try to end the strike.

The university said the strike disrupted many online undergraduate classes taught by graduate students.