Cambridge-educated music teacher Ben Breakwell, from York, had a sexual relationship with two of his pupils aged just 13 and 14, kissed another schoolgirl and took indecent pictures of a fourth and was jailed for 17 years.
Breakwell, 40, abused his position to carry out sex acts with underage girls at a school in Hammersmith, west London, a court heard.
Isleworth Crown Court heard how Breakwell groomed two girls, aged 13 and 14, and set up a series of seedy encounters at his home where he began a full sexual relationship with his victims.
Breakwell was jailed for 17 years and put on the Sex Offenders Register for life after being convicted of 32 counts against the four girls.
He was found guilty of 22 charges of sexual activity with a child, three counts of causing or inciting a child to engage in sexual activity, four charges of sexual activity with a child by a person in a position of trust, a count of sexual assault, and two allegations of taking indecent photographs of a child.
The offences involved kissing, intimate touching and oral sex.
