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.
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The prince will meet the country's indigenous people on the penultimate day of his tour of the West Indies.
The University of Colorado said it is also terminating Dr Michelle Herren's non-paid medical faculty appointment.