A teacher has appeared in court charged with 21 offences of indecency against 11 females - eight of them schoolgirls.
Russell Singleton, 56, from Heanor, is alleged to have abused his position of trust while working at Alfreton Grange Arts College, formerly known as Mortimer Wilson secondary school, in Alfreton.
He faces seven charges of sexual activity with a girl while she was aged 15 and 16, on dates between August, 2010, and March 30.
Singleton is further accused of 11 counts of taking or making indecent photographs of eight girls aged between 13 and 17 on dates between 2003 and April 14, this year.
He is also alleged to have committed three offences of voyeurism by recording private sexual acts.
These allegations relate to images of females aged between 17 and 23 using a toilet or shower on dates between 2005 and December, last year.
The offences are alleged to have taken place at Alfreton, Heanor and Swanwick.
Singleton, of Lawn Close, entered no pleas to the charges when he appeared before magistrates at Chesterfield on Monday.
The justices committed the case to Nottingham Crown Court for a hearing to take place on March 5, 2013.
He was granted bail on condition he had no contact with the 11 complainants or any current or former female pupils of Alfreton Grange Arts College, and no unsupervised contact with anyone aged under 18.
The females cannot be identified for legal reasons.