Our reporter Ségolène Le Stradic reports from Paris as labor unions rally in solidarity with high school students protesting school conditions.

Union members, parents, teachers and others took part in mass demonstrations around the country, backing student demands that the government invest more in schools.

© Kiran Ridley/Agence France-Presse — Getty Images

The rallies are a test of the strength of the student-led protest movement that has escalated at French high schools since late September.