Teachers in South Australia are campaigning for a 21% pay increase and improved conditions for education. WET weather did not deter 3000 school teachers who met on the steps of Parliament yesterday demanding a 21 per cent pay rise over three years. In a sea of umbrellas, public and Catholic school teachers, TAFE lecturers and childcare workers also asked for a drastic reduction in class sizes and improved work-life balance provisions. Australian Education Union SA branch president Correna Haythorpe said: ``The Government's offer is insulting, inadequate and inept.'' The AEU has rejected the State Government's offer of a 9.75 per cent pay rise over three years. Ms Haythorpe said they were demanding an ``improved offer'' by Wednesday, May 28, and would consider industrial action if demands were not met. Industrial Relations Minister Michael Wright said they would continue discussions with the AEU next week. ``The Government has put forward a very good offer to teachers worth $306 million over three years (which) is a fair offer to teachers and taxpayers,'' he said. ``Any industrial action that impacts on students and parents is unacceptable (and) if this does occur, the Government will seek some relief from the Industrial Relations Commission.''