Three men who admitted stealing £200,000 worth of computer equipment from schools across Suffolk and Essex have been jailed.
Fifty six primary schools and colleges were targeted following detailed research by the gang into the location of IT departments and security arrangements.
Among the primary schools raided were Rougham, Bardwell and Great Barton. All had laptop computers stolen.
Ipswich Crown Court heard on Friday that others were believed to have been involved in the night time raids but they have never been caught.
Appearing in court were Christopher Kerr, 25, of Halstead Road, Frinton; Liam Cook, 26, of Bushell Way, Frinton and Francis Wilding, 22, of Broadway, Jaywick who all pleaded guilty to conspiracy to commit burglary between August 2012 and May 2013.
Kerr admitted involvement in 16 raids, Cook five and Wilding 28.
Despite more than 300 computers being taken none has been recovered. The gang were caught after Wilding left traces of blood at one location which allowed police to trace him and seize his mobile phone which revealed details of calls to Cook and Kerr.
Wilding and Kerr were each jailed for 64 months and Cook for 40 months.