The local authority apologises to parents for the error and is investigating what happened.
The new system of grading using report cards is set to be introduced by Ofsted in November.
The criminals say they will share 30 more profiles along with 100 employees' data if a ransom is not paid.
The government says reading is key, but unions say it could lead to more stress for staff and students.
Experts have condemned the hack as an "absolute new low" for cyber-crime.
Education Secretary Bridget Phillipson says "the taxpayer shouldn't be subsidising" inspection fees.
A falling birth rate and families moving away from London has caused a drop in pupils, a study finds.
Women and LGBT students were more likely to report incidents than their male and heterosexual counterparts.
Sir Anton Muscatelli calls for a review of the future funding and shape of higher education.
Year 10 students in Wales are the first to begin the new courses after a major curriculum overhaul.
The new system will go live in September 2026, Cornwall Council said.
The pair have been released on bail until the end of November, police say.
Tatjana says her 16-year-old son needs a specialised taxi with a trained escort to get to school.
Cancer diagnosis is hard, but looking and feeling like you have cancer can be even worse, says Gaby.
Both women and men can experience a loss of libido after having a child, here's what can help.
Ryan Beggs, 19, has been enrolling in apprenticeship courses for the past two years but has been unable to find a suitable employer.
The Teaching Regulation Agency (TRA) says Zoe Williams fell "significantly short" of the profession.
The party says mandatory warnings are required to protect children from "addictive" app algorithms.
Carla Risoldi, a summer school student at the college in 1985, returns the key on a visit to the UK.
As students struggle to cover the cost of university, the BBC speaks to young people to find out how they make it work.
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