More than 40 schools across Barnsley were closed as teachers went on strike in a dispute over pay, pensions and working conditions.
Primary and secondary schools were closed to pupils on Tuesday as members of the National Union of Teachers and the National Association of Schoolmasters and Union of Women Teachers protested about changes to their pensions, increased workload and government plans to bring in performance-related pay from this autumn.
One English teacher picketing outside Kirk Balk School in Hoyland said she was on strike to support the union and defend teachers' pay and conditions.
She has worked at the school for seven years, and said: "We don't think it's sustainable to be working every night, working late, working weekends and holidays, but nobody seems to be saying that's not reasonable.
"We go into teaching because we enjoy being around children, teaching and being in a classroom and that's why we work so hard because we want to do the best for the children.
"They basically want us to work more for less and the teachers I know can't work any harder so I don't really know where we go from there."
Another English teacher, who has been at Kirk Balk for about ten years, said teachers at the at Kirk Balk had not had a pay rise for three years and will be expected to pay ten per cent of their monthly salary into their pensions.
She added: "I'm not really clear on what the government are trying to achieve. It just makes people feel disregarded and less valued."