Families and teachers demonstrated in Valencia on Saturday demanding immediate action for schools damaged by the deadly floods which killed over 220 people in eastern Spain and influenced the education of thousands of children.

Holding up posters demanding her resignation of Valencia leader Carlos Mazonprotesters marched in the Spanish city nearly a month after the country’s worst natural disaster in decades on October 29.

Controversy over the regional government’s handling of the floods continues to rage, with a teachers’ union accusing it of leaving the clean-up to teachers and students.

Five people are still missing in the Valencia region after torrential rains and flooding drowned people trapped in cars and underground car parks, while houses collapsed.

Thirty schools are still closedsaid the regional teachers union STEPV, leaving 13,000 children without a place to learn.

About 5,000 people attended the demonstration, the Spanish government said.

“We feel abandoned because teachers, parents and volunteers had to clean the schools. We have seen cleaners in some schools, but it is not enough“, STEPV spokesman Marc Candela told Reuters.

A spokesman for Valencia’s regional government said that as of Nov. 11, about 32,000 students from flood-affected areas had returned to school.

“Emergency cleaning work is being done in educational centerssaid Daniel McEvoy, Valencia’s Minister of Education.

Mazon was accused of sending flood warnings to residents too late.

He admitted he had made mistakes but refused to resign and said the body responsible for measuring water flows, run by the national government, had not sent enough warnings.