Thousands of students, some hurling eggs and others breaking windows, marched nationwide Friday in the largest protests in two weeks of strikes over violence and overcrowding in French high schools.

Premier Michel Rocard promised to create thousands of jobs to improve crumbling, crime-ridden high schools. But a student leader said Rocard had failed to address basic demands for more teachers and security guards.Most of Friday's protests unfolded peacefully. But in Mulhouse, near the Swiss border, about 200 students threw eggs and paint at Albert Schweitzer High School and threatened a teacher with a knife. Police made two arrests.