Current A-Level exams are not challenging enough, according to a leading association representing the interests of school leaders employed in education jobs across England.
The Headmasters' and Headmistresses' Conference (HMC) has expressed concerns that "inconsistencies" exist regarding the level of pupil achievement for A-Level exams - an opinion which has been backed by lobbying organisation the Campaign for Real Education.
Nick Seaton, chairman of the CRE, said: "There is widespread concern that youngsters with good A-Level grades haven't got sufficient knowledge to move straight into university courses.
"Too many universities are having to provide remedial courses for youngsters to catch up on work that they should have covered in school."
Mr Seaton stated that overall responsibility for A-Level exam standards resides with the official regulator Ofqual, as well as government ministers.
The HMC claims to have noticed significant year-on-year variances, both up and down, for A-Level grades awarded in 2008 and 2009.