The teaching union NUT Wales welcomed the amendment, which it said "highlights the financial pressures schools face".
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The leader of the biggest teachers' union the NUT, Doug McAvoy, said there needed to be "a thorough review".
The teachers' union, NUT Cymru, has been advising its members to report for work as usual despite the strike action.
The Easter weekend will see delegates from the National Union of Teachers (NUT) meeting in Liverpool, while the National Association of Schoolmasters Union of Women Teachers (NASUWT) is holding its annual conference in Bournemouth.
The National Union of Teachers (NUT) said it was part of a campaign to defend education.
However, the National Union of Teachers (NUT) says the government has "ignored" teachers and Derby people.
Christine Blower, general secretary of the National Union of Teachers (NUT), was also critical.
Robert Wilkinson, Wokingham and district secretary for the National Union of Teachers (NUT), welcomed the plans for new schools.
Heamoor Primary School staff walked out in the dispute supported by the National Union of Teachers (NUT) over workload, pay and conditions.
The NASUWT teachers' union and the National Union of Teachers (NUT) said a one-day strike is planned in north-west England on 27 June.
Members of the University and College Union (UCU) and the National Union of Teachers (NUT) walked out of the college sites at 13:00 BST.
The National Union of Teachers (NUT) said the strike was in protest at a decision to consult to change from maintained schools to academies.
Six out of the seven staff at Heamoor Primary School near Penzance walked out in a dispute by the National Union of Teachers (NUT).
Meanwhile, the National Union of Teachers (NUT) says an independent review should establish how many pupils who were on course for a C grade got a D.
The Association of Teachers and Lecturers (ATL) and the National Union of Teachers (NUT) say the 5 June deadline is too early - especially as this is the first year of the new pay system.
The National Union of Teachers (NUT) and Nasuwt say the reverse is true, that by not doing routine tasks such as photocopying or having "unacceptable levels of meetings", teachers can focus more on teaching and learning.
The five unions involved were Members of University College Union (UCU), the National Union of Teachers (NUT), the Association of Teachers and Lecturers (ATL), the National Association of Head Teachers (NAHT) and the Public and Commercial Services Union (PCS).
Members of the University and College Union (UCU) and the National Union of Teachers (NUT) are planning to walk out of K College on the same day and protest at the Tonbridge campus, outside the governors meeting where the job cuts will also be discussed.
"The NUT might be the first union to put its name to public sector-wide strike action, but it certainly won't be the last, " she said.
BBC: NEWS | UK | Education | Teachers back pay strike ballot
The rally was jointly organised by the NUT and National Association of Schoolmasters Union of Women Teachers (NASUWT) trade unions.
Teachers at the NUT conference also called on the union to find legal ways that would allow teachers to boycott inspections.
But its extra provisions, which make pupil-teacher affairs illegal, have been described by the headteachers' union as a "sledgehammer to crack a nut".
This week three unions - the civil servants' union the PCS and two teaching unions the NUT and ATL - unveiled plans to get 750, 000 of their members to walk out later this month in protest at pension cuts.
The move by the NUT will be followed on Friday by the more moderate union, the Association of Teachers and Lecturers.
The NUT published a survey of more than 2, 000 members of the union showing widespread opposition to the curriculum.
National Union of Teachers members in Nottingham City plan to strike over the issue next Thursday and have asked NUT conference delegates to back them.
BBC: Strike pledge over school summer holiday and term changes
The NUT's campaign against the linking of pay to performance comes as a headteachers' union has called for a slowing down of the pace of reform.
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