A teacher has admitted having sexual activity with a child while in a position of trust.
Steven Rundle, 31, of Wendover Road, Aylesbury also pleaded guilty at St Albans Crown Court to making indecent photographs of a child and possessing indecent photographs of a child.
He worked as a secondary school guitar teacher in Dacorum at the time of the offences which involved a teenage girl.
Rundle was suspended from work following the allegations.
He is due to be sentenced on Friday, March 23.