Members of the EIS union, which represents teachers in Scotland, began 16 days of industrial action on Monday, with teachers in two of Scotland's 32 local authority areas protesting each day until 6 February.
A teachers' union is pressing on with rolling strikes amid a dispute over pay.
Members of the Educational Institute of Scotland (EIS) union began 16 days of industrial action on Monday.
Teachers are also protesting to air their concerns.