A school has agreed to a settlement with the families of three students who died after being hypnotised by their headteacher.

Florida's North Port High School board agreed to pay $200,000 (£131,000) to each family.

The case began after former principal George Kenney admitted he hypnotised 16-year-old Wesley McKinley a day before the teenager committed suicide in 2011, the Herald Tribune reports.

A subsequent investigation is said to have found Mr Kenney had hypnotised as many as 75 students and staff members from 2006 until the teenager's death.

One basketball player reported he had been hypnotised up to 40 times to improve his concentration.

He also hypnotised Brittany Palumbo, 17, who committed suicide in 2011, and Marcus Freeman, 16, who was killed in a fatal car accident after self-hypnotising, a technique Mr Kenney is reported to have taught him, it is claimed.

Before the deaths, a school official had reportedly warned the headteacher on three occasions he was not to practice hypnosis unless it was a demonstration in a psychology class and he had written permission from their parents.

However, even those demonstrations may have been illegal because Mr Kenney did not have a license to practice hypnosis, according to the Herald Tribune.

Following the investigation, Mr Kenney was placed on administrative leave and resigned the following year.

He was later reportedly charged with two misdemeanors for practising hypnosis without a license, for which he entered a plea of no contest.