Queensland Education Minister Grace Grace remained confident on Wednesday that a new enterprise bargaining agreement would be reached with state school teachers after their union's members voted for strike action.

The Queensland Teachers Union was turning up the pressure for the state government to finalise a deal on pay rise, workload, gender employment inequity and salary issues.

About 94 per cent of QTU members voted in favour of a 24-hour strike for the first time in 10 years, which would take place on July 18.

Ms Grace said no formal offer had yet been given to teachers because negotiators were talking through classification changes for principals, deputy principals and new “high achieving teachers.”

“The formal offer will be in line with the government’s wages policy of 2.5 per cent,” she said.