Freedom of Information requests sent by Big Brother Watch to more than 2,500 secondary schools revealed that more than 866,000 children were having their fingerprints taken.
That was for the academic year 2012-13 and, now the 2013-2014 term has started, the privacy group believes that figure has risen above one million.
Read more: GB: Schools fingerprinted "more than 1m" kids without consent
GB: East of England:Nearly 62,000 pupils in region could have fingerprints recorded by their schools
According to a report published today (January 3) by Big Brother Watch, 124 schools replied when asked about biometric data with 57 of them confirming they used it.
Only 60 per cent of those schools had parental permission to use the technology.
Figures show that four out of 10 secondary schools now use biometric technology as a means of identifying pupils - with nearly a third failing in their duty to seek parental consent before introducing the system.
The figures are based on Freedom of Information request returns from 1,255 schools to the civil liberties campaign group Big Brother Watch with the group warning pupils will grow up believing “it is normal to be tracked like this all the time”.
Read more: GB: Privacy concerns raised as more than one million pupils are fingerprinted in schools
Of 866,423 pupils enrolled using the technology, 31 per cent did not receive parental permission prior to the Protection of Freedoms Act 2012, the group has warned.
Big Brother Watch also estimate that, if the percentage of schools using the technology increases from 25 to 30, more than a million children will be fingerprinted.
Read more: Privacy fears as UK approaches 1 million fingerprinted pupils
Figures released today based on a Freedom of Information action request shows that 60 schools in the region have used biometric systems to do this.
The report, published by civil liberty campaign group Big Brother Watch, had responses from 128 schools across Yorkshire with almost half saying they had taken pupils’ fingerprints.
Read more: GB: Yorkshire: Scores of schools say they took pupils’ prints