Almost two-thirds of members voted in the ballot, and 94.4% voted in favour of strike action, with 95.99% voting in favour of action short of a strike.
The NASUWT said it submitted a detailed pay claim in April 2018 but the States never formally responded.
Another teaching union, the Jersey branch of the National Education Union, as well as the Jersey branch of the National Association of Headteachers, have also previously voted overwhelmingly in favour of strike action.
The NASUWT met the States Employment Board in November and say they again stressed the need for a substantial, above-inflation pay increase for teachers and lecturers.
The States later imposed the original pay award.
Chris Keates, NASUWT general secretary, said: ‘The resounding level of support for industrial action demonstrates the depth of anger among members.
‘The NASUWT hopes that the States will now realise that they must come back to the table for meaningful talks about an improved pay award to avoid industrial action.
‘The imposed pay award compounds the real-terms cuts that have occurred over the last decade. By 2020 teachers’ and lecturers’ pay will have been reduced by well over 10% since 2008.
‘When compared to average earnings, which have consistently exceeded inflation since 2008, teachers’ and lecturers’ pay will be more than 15% behind by 2020.
‘This erosion in the value of pay has adversely affected the living standards of teachers. It is also generating recruitment and retention problems because of the reduced competitiveness of education salaries in Jersey. This not only threatens the high standards of education in Jersey but will drive up teachers’ workload and class sizes if teachers cannot be recruited to fill vacancies.’
