A teacher caught with pornographic images of children has been warned he faces a jail sentence.
Gerard Cranny admitted at Lincoln Crown Court six charges of making indecent pseudo-images of youngsters.
A brief hearing was told the 54-year-old, who won a teacher of the year award in the local newspaper, committed the offences on 22 August last year.
Geography teacher Cranny, of Horton Street, Lincoln, is currently suspended from the city's Christ Hospital School.
He has taught at the school for more than 20 years and was named the Lincolnshire Echo's Teacher of the Year in 2002.
Cranny was granted bail after John Lloyd-Jones, defending, asked for sentencing to be adjourned to a later date for the preparation of reports.
Judge William Everard warned Cranny the law was "very tough" in such cases and he should understand a prison sentence was likely.