Updated at 11:53 a.m. ET

When students are believed to be a danger to themselves or others, they're sometimes restrained in school, or isolated in a separate room. These practices, known as restraint and seclusion, are supposed to be a last resort, and they disproportionately affect boys and students with disabilities or special needs.

Updated 10:40 a.m. ET

On the day of his self-declared presidential campaign kickoff, President Trump is threatening to deport "millions" of immigrants in the United States illegally beginning "next week."

But what's known is far less definitive.

Nearly half the people admitted to state prisons in the U.S. are there because of violations of probation or parole, according to a new nationwide study that highlights the personal and economic costs of the practice.

The Council of State Governments Justice Center said the majority of these violations are for "minor infractions," such as failing a drug test or missing a curfew. Those so-called technical violations cost states $2.8 billion every year, the report says.

A North Miami police officer has been found guilty of culpable negligence but was acquitted by a jury on two more serious felonies in connection with a 2016 shooting that wounded the caretaker of an autistic man.

Officer Jonathan Aledda was found not guilty of two counts of attempted manslaughter in the shooting of Charles Kinsey, who was caring for Arnaldo Rios Soto, a severely autistic man who had wandered away from his group home for mentally disabled adults.