Students at The Duston School were told they would have to resit a set of exams after Royal Mail lost their papers in the post.
Three weeks ago year 20 teenagers on the childcare development course took their GCSE equivalent CACHE exam paper early because course leaders felt the group was performing well enough to do so.
But on Wednesday parents of the pupils received a letter from the school saying: “We have had communication from the exam board that they have not received the exam papers.
“On further investigation it was discovered the papers were lost by Royal Mail.”
Susan Freund, whose 15-year-old daughter Bethany will now have to resit the exam on June 24, said she was furious at the blunder. Many pupils even attended revision sessions over their Easter Holidays.
She said: “These exams are not just a ten-minute thing - these girls have now all got to resit a paper they thought they were finished with. They will be so stressed about it, they may well not get the grades they were expected to get.”
Mrs Freund said she was shocked the school did not send the exam papers through a more secure method.
She said: “You wouldn’t send a relative £100 of cash in the regular post would you?
“At the very least I would have thought they would be sent by recorded delivery – or even courier.”
The school said it was now investigating how the papers were lost.
The letter to parents went on to say: “This is a very unusual and unfortunate situation and has never happened at Duston School before.”