When it became apparent that Ms. Hargrave was being handcuffed in the hallway, the audience appeared startled. Several followed her into the hallway, and the video showed her on the floor and then standing, handcuffed, with the marshal behind her. “Stop resisting,” he said as he walked her outside.

“I am not — you just pushed me to the floor. I am way smaller than you,” she said.

Outside, the marshal called for backup. He is heard saying to her that he had given her orders to leave, and Ms. Hargrave, standing in the dark against a car, replied, saying she was “walking and asking you a question.”

She was placed in an Abbeville police patrol car.

The meeting ended shortly after the episode, Laura LeBeouf, a school board member, said Tuesday in a phone interview.

It was expected to be a contentious meeting, she said. Board members had long been split on renewal of the superintendent’s contract, but the death of a board member in November changed the composition of the board. A 4-4 deadlock became 5-3 in favor of the new contract as the appointed member voted in favor of the renewal, she said.

Ms. LeBeouf, who voted against the renewal, said teachers had gone without a permanent raise in 10 years. She said Ms. Hargrave taught at Rene Rost Middle School, where she won a teacher of the year award in 2016.

“Deyshia’s very outspoken,” she said. “She’s a great teacher.”

Before the vote, Ms. Hargrave spoke when one of the officials at the board meeting invited comments from the audience.

“I have a serious issue with a superintendent or any person in a position of leadership getting any type of raise,” Ms. Hargrave said, standing next to her seat. “I feel like it is a slap in the face to all the teachers, cafeteria workers and any other support staff we have.”