Scotland's teachers are to announce more strike dates for next year, the EIS union has said.
The first full strike in Scotland's schools for nearly 40 years will take place on Thursday.
It comes after what the union described as an "insulting" revised pay offer from council body Colsa was rejected.
Scotland's largest teaching union has already announced additional strike dates for January and said industrial action in February is now planned too.
The EIS also warned further strikes in December could not be ruled out.
Education Secretary Shirley-Anne Somerville has described the pay offer on the table as fair and said the EIS demand of a flat 10% rise for teachers was "unaffordable".
