A TEACHER hid a terrible secret for years.
Graham Roebuck had abused two youngsters and amassed a sick collection of child porn images.
But now the man who had taught at schools in both Huddersfield and Halifax has been jailed for five years.
And he has also been ordered to register as a sex offender for the rest of his life.
The abuse happened almost a decade ago but was investigated by police in 2010 and detectives found more than 2,500 indecent images on a computer.
Roebuck, 58, of Berry Brow, had denied all the charges but was convicted at Bradford Crown Court.