A classroom at the Martha's Vineyard Regional High School was briefly evacuated Friday morning after two teachers reported feeling dizzy, school and fire officials confirmed.

Sam Hart, coordinator of Pathways and Special Projects, said that school officials called the Oak Bluffs fire department "out of an abundance of caution." Tests conducted at the scene by fire personnel found no air contaminants, he said, and the classroom was cleared for students to return.

Oak Bluffs fire chief Nelson Wirtz said an ambulance and rescue vehicles had been sent to the school to evaluate teachers and students.

"The paramedics tested everyone,” Mr. Hart said. “It is something we take very seriously, obviously.”

Oak Bluffs Deputy Fire Chief Stephen Foster said later that no determination was made about what might have caused the teachers' dizziness.

He clarified that one of the teachers went to the hospital for evaluation by car, not by ambulance.

Editor's note: an earlier version of this story incorrectly stated that students reported feeling unwell.