This is a "timeout box" in an elementary school

As reported in The New York Times:

It has ignited an uproar in the school system, the Salmon River Central School District, a small district with 1,300 students on the Canadian border.

Within days, the school board enlisted a law firm to investigate what happened. It reassigned the district’s superintendent to “home duties” until the review is completed. And it placed several other leaders on leave, including a principal and the district’s special education director.

Officials also revealed that the box depicted in the social media post was not the only one: Two others had been installed in schools, according to the superintendent. They have been removed.

Images brightened and cropped for size from the originals at the link, where there is additional information and commentary.