PUPILS were distraught to discover a mix-up at Tewkesbury School meant they had no grade for one of their A levels.
Ten youngsters taking the Health and Social Care course were amazed to be told one of the modules they had taken was the wrong one and the exam board had been unable to give them a grade.
The school's error meant that, despite studying for 12 modules over two years, the youngsters had nothing to show for it yesterday.
The school apologised for its mistake and said the pupils would be given an overall grade as soon as possible.
But that was not before anxious parents of the youngsters involved had spent yesterday morning frantically trying to find out what had gone wrong and what it would mean for their children.
One parent, who asked not be identified, said the pupils only found out about the mistake when they turned up at the school's sixth form centre to get their results.
She said the problem was that the pupils had been taught the wrong module and had therefore sat the wrong paper in an exam.
She said: "I'm gutted because they worked so hard for this."
Another relative, who also did not want to be identified, said she could not understand how the mistake had been made.
She said: "Surely the teacher should have checked this paper out before giving it to the pupils to sit the exam.
"Now, there's no result at all for them. Two years of study and they've got nothing, basically.
"The parents are hopping mad. One went up there to confront the headteacher.
"And I'm not letting it go. It's just not on."
Headteacher Gary Watson confirmed that the mistake concerned the Health and Social Care course, a double award which was the equivalent of two A levels.
He said: "The students did all 12 modules but missed out a compulsory one and did an optional one. We failed to enter them for the compulsory one.
"As far as the exam board was concerned, they hadn't sat all the compulsory elements."
He said the school had been in touch with the AQA board and each pupil would be given a grade within 24 hours and, possibly, by the end of yesterday afternoon.
He said he was unsure how the board would do that but it might decide to simply add up the 12 scores it had been sent.
He added: "It's not the fault of the students, it's the fault of the school."
Mr Watson said he understood the concern over the matter and an internal review would be held at the school into what went wrong.
He said: "I've written to the families and tried to get hold of them on the phone, apologised for this and reassured them that we're trying to get the grades released as soon as possible.
"Clearly, it's very frustrating for parents and school leaders when these things occur."
Rose Obianwu, spokeswoman for the AQA board, said: "Tewkesbury School has been in contact with us and has submitted a special late entry request .
"We will work with them to process this as a priority and candidates will receive their results shortly."