Russell Hobby, General Secretary of the National Association of Head Teachers, said outside the High Court:
"We want a regrading. Too many students have actually left the education system believing that it's not for them as a result of this.
"So Ofqual's solutions have been totally inadequate. What we need is the grade shifted back to what it was in January and then tens of thousands of students who've been denied apprenticeships and higher education can carry on with their lives."