A supply teacher who groomed schoolgirls via internet chatrooms before making videos of himself having sex with them has been jailed for six years.
Anthony Mulhall, 32, from Liverpool, posed as a younger man to prey on the girls, some as young as 14, on websites such as Facebook and MSN Messenger.
The former soldier won the confidence of the teenage girls, convincing them to meet him and have sex.
Jailing him at Liverpool Crown Court, Judge David Boulton branded him "a systematic sexual predator".
The court heard Mulhall, who also coached American football teams, made a video of a 14-year-old girl, dressed in a short skirt, lap-dancing and performing a sex act.
Mulhall, who told the girls he was only 26, also gave them presents of teddy bears and jewellery and took them on dates to the cinema. During these "dates" he would often video himself having sex with the girls.
The court heard Mulhall, from Ferndale Road, Wavertree, had admitted 12 counts of sexual activity with three girls, none of whom were his pupils, at a previous hearing.
He also admitted four charges of making indecent videos, one count of possessing indecent images and two counts of sexual grooming.
Detectives discovered a further 42 indecent images of 20 unidentified girls in Mulhall's possession.
Mulhall was also disqualified from working with children and banned from owning or using a computer without permission.
