34 schools in Yorkshire and the Humber, are using CCTV cameras in toilets or changing rooms, figures have revealed.
A national study found that a total of 825 cameras were located in the toilets or changing rooms of 207 schools across England, Scotland and Wales. The figures were provided by more than 2000 schools across the UK.
Almost one in 10 of the schools which use CCTV said cameras were positioned in such places, while 54 have more than one camera for every 15 students.
Responses from 2,107 secondary schools and academies showed they used 47,806 cameras, including 26,887 inside school buildings. With 1.8 million pupils being taught in these schools, there was an average of one camera for every 38 children.
In all, 90% of schools had CCTV cameras, with an average of 24 cameras in each of the 1,537 secondary schools that responded and 30 cameras in each of the 570 academies. The estimated number of CCTV cameras in secondary schools and academies across England, Wales and Scotland was now 106,710, the campaigners said.