Grammars 'will not boost poorest pupils' science grades'
There is no evidence that grammars will boost overall standards in the sciences, says the Royal Society.
Top scientists fear plans for more grammar schools in England will not boost disadvantaged pupils' grades.
Overall, the poorest pupils do worse in science and maths subjects in areas with selective schools, suggests research for the Royal Society, the UK's independent scientific academy.
New grammars are likely to help "only a small proportion" of the poorest pupils, it says.
Ministers maintain that their proposals will improve social mobility.
A government consultation on plans for more selective education closed earlier this month.
"Social mobility is a complex issue," said Prof Tom McLeish, chairman of the Royal Society's Education Committee.