A quarter of England's state grammar schools still let in hardly any poorer children, despite most trying to improve their admissions policies, according to BBC analysis.
Out of 160 grammar schools, 112 now have quotas or give high priority to disadvantaged children - but the impact is patchy.
A leading academic says some appear to have made only a "token effort".
The government says it's reviewing how to make grammars more inclusive.
The concern that grammar schools have become the preserve of better-off families has led to pressure for change.
