Staff at Edexcel have spent most of the week investigating a host of similar queries.
We are certain that Edexcel exams meet the same standards as those of other awarding bodies.
BBC: Government calls for 'fundamental reform' of exam system
The two exam boards, AQA and Edexcel said they would not be making further comment.
She said Edexcel had agreed a nine-point action plan with the AoC to improve its services to colleges.
Exam board Edexcel, which runs BTecs, is piloting a Diploma in Digital Applications (DiDA), also worth four GCSEs.
The other big examiner, Edexcel, does not offer Latin or Greek, nor do the Wales or Northern Ireland-based boards.
BBC: NEWS | UK | Education | Anger as exam board drops classics
Another board, Edexcel, said examiners' contracts stated that no discussion of the content of future exams should take place.
BBC: Government calls for 'fundamental reform' of exam system
Last month the alliance served court documents on England's exams regulator, Ofqual, and two exam boards, AQA and Edexcel.
But a spokeswoman from the exam board, Edexcel, accused the NAHT of scaremongering.
Earlier this month letters between another exam board, Edexcel and the regulator Ofqual, were leaked to the Times Educational Supplement.
It has served court papers on exam boards AQA and Edexcel, detailing the case for the exams to be regraded.
Police - acting on information from the exam board Edexcel - went to the tutorial centre at 1930 BST on Monday.
But Edexcel and AQA said they had acted properly and Ofqual argued it had acted in a "clear, principled and transparent" way.
Clearly Edexcel has had administrative problems that the other boards have avoided.
But that still leaves the issue of why so many complaints from schools seemed to single out Edexcel rather than the other boards.
They compared the IGCSE syllabuses from the two exam boards that offer the qualification, Edexcel and Cambridge International Examinations, with two GCSE syllabuses.
In view of the importance of this issue, I am copying this letter to Edexcel and to the Joint Council for General Qualifications.
The board says this is generating considerable interest in schools, where currently more than 100, 000 students take their GNVQ in ICT with Edexcel.
The alliance has written formally to Ofqual and the exam boards AQA and Edexcel challenging the refusal to regrade GCSE English papers in England.
The three organisations also suggest there should be just one exam board in England, rather than the current three - Edexcel, AQA and OCR.
The latest allegation from the Telegraph is that an examiner from the Edexcel exam board told its reporters that one of its exams was easy.
BBC: Government calls for 'fundamental reform' of exam system
The recent financial problems suggest, however, some explanation for Edexcel's problems.
In French, the Edexcel IGCSE did not include a speaking test.
The boards AQA and Edexcel have been defending their roles in shifting grade boundaries, on the second day of a judicial review at London's High Court.
This included having two college representatives on Edexcel's council and setting up a further education forum, which is due to meet for the first time next month.
The QCA is running a pilot scheme in 60 schools with the Edexcel board, involving "more relevant and interesting topics", such as business vocabulary and the media.
In fact, a survey of employers last year, commissioned by the government and Edexcel, an examining board for diplomas, found that most rated diplomas just as highly.
Edexcel is an incorporated charity registered with the Charity Commission.
Jerry Jarvis, the managing director of Edexcel, one of the three big exam boards, has said that early adopters of the diploma risk emerging with a worthless qualification.
But the exam board, Edexcel, has questioned the school's security and says that it will be "putting in special ongoing monitoring procedures to ensure that future breaches do not occur".
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