Ministers have intervened to delay plans that education chiefs believe could pave the way for over 150 more children to join Kent grammar schools each year.
Proposals to make Holcombe Grammar, Chatham Grammar and Fort Pitt, all in Medway, co-educational were unveiled last year.
Leaders said the move would cut the number of pupils bussed into the area, while also balancing the number of boys and girls attending the district’s selective schools.
Medway Council – which backed the scheme – stated that the changes could precede an increase in the proportion of youngsters sitting its 11-plus exam being admitted by grammars.