Eight schools in the West Midlands have between 300-400 of the country's worst truants, The Birmingham Post can reveal.
The schools have been ordered to identify their " serial truants" under a Government crackdown which could lead to the youngsters' parents being prosecuted.
They are among 146 nationwide that the Department for Education and Skills believes are harbouring the country's 8,000 most persistent truants.
Three of them are in Birmingham with one each in Sandwell, Solihull, Wolverhampton, Stoke-on-Trent and Worcestershire.
Parents of the children will be given 12 weeks to improve attendance or face a fine of up to #2,500 - or even jail.
John Smail, Birmingham's lead attendance officer, said it was unfair of the Government to focus on just a handful of schools.
" Targeting individual schools doesn't represent fully the circumstance," he said.
"There are limits to any data-based exercise like this."
Solihull Council warned parents of truants they faced prosecution. Steve Martin, chief education welfare officer said: "We will use these new powers and continue to take other appropriate action in cases where parents fail to ensure that their children attend school."
Julian Souter, head teacher of Holly Lodge High School College of Science in Sandwell - one of the eight - said it was right parents were being targeted.
"I don't want to penalise families where it is beyond their control," he said.
"But where there is clear evidence that the families are not working with us then you need something more hard edge than knocking on doors."
The DfES had refused to name the 146 schools it was targeting. But using the Freedom of Information Act, The Birmingham Post has discovered eight of them are in the West Midlands.
Government officials estimate each has between 40 to 50 hardcore truants.
"We are currently collecting information from these schools on the number of persistent truants in each of these schools," a spokesman said.
About 55,000 pupils bunked off class each day last year nationally.
In the West Midlands, on average, 750 pupils played truant on each of the 192 days of the academic year. It meant a fifth of youngsters missed school without a valid reason for at least a day.
Read more on this subject: