Tens of thousands of students are strapped down or physically restrained in school. Disability advocates hope that a new Education Department report detailing the practice of "seclusion and restraint" will spur federal action to curtail it.
The report reveals that 70 percent of students subjected to the techniques have disabilities. It was released by the department's civil rights arm for the first time.
Secluding and restraining kids is controversial, and there are no federal standards on its use in schools.
The American Association of School Administrators says using these techniques as a last resort in volatile situations protects students and faculty from physical harm.
They say it also keeps some children in schools who might otherwise go into residential institutions.
Advocates say the use has led to abuse.