A dispute in Lincolnshire over jobs and workload remains unresolved ahead of the new school year.
The new plan to save money will not involve restructuring or compulsory redundancies, a union says.
Union members end their industrial action at Haydon Bridge High School amid talks with new bosses.
Teaching at Grays Convent High School is being disrupted due to ongoing industrial action.
The five main teaching unions in Northern Ireland are to ballot their members from 10 June.
Union members have taken 13 days of industrial action at St Cuthbert's RC High School since February,
Parents voice support for striking staff at Queen Elizabeth's School and Corfe Hills School.
Banovallum School and Queen Elizabeth's Grammar School in Horncastle will be affected.
Staff members at Queen Elizabeth's School and Corfe Hills School took industrial action on Wednesday.
