Only 8% of parents support the education secretary's reforms and think they are good for their children, the general secretary of the National Teacher's Union (NUT) said.
Christine Blower made it clear no one - teachers and parents - wanted to resort to a strike, but industrial action was necessary if a pay system which was "fair" to teachers "everywhere" was implemented.
More top news
Uber has been branded a "disgrace" by shadow chancellor John McDonnell after the firm lost its licence to operate in London.
Angela Merkel is shaping up to win a fourth term as German chancellor - extending her 12-year stay at the top of the Bundestag.
Cambridge once again beat rival Oxford in the Good University Guide league table while Lancaster was named university of the year