Entering students early for exams could have a negative impact on maths education, it has been suggested.
The Advisory Committee on Mathematics Education (ACME) said it is concerned about the increasing trend towards early entry.
More than ten per cent of students sitting GCSE maths in 2010 were aged 15 or younger, more than double that of 2008.
Professor Dame Julia Higgins FRS, chair of ACME, said it is no longer a case of schools carefully selecting the brightest students for early entry.
"The pressure on schools to improve their standing in the league tables provides an incentive to act in the school's best interests rather than those of the individual students," she commented.
According to ACME, students that are entered early for exams must be confidently predicted to achieve an A*.
The government announced last week that students who do not gain a C grade or better in GCSE maths and English will be required to continue studying the subjects until they do.
Posted by Katie Kearns