It continues the legacy of the National High School Union (UNL), founded in 1994, and La Voix Lycéenne, created in 2021.
In October 2009, UNL-D (previous name of the Syndicat général des lycéens), after denouncing "fraudulent" practices during votes at the association's national council, split from the union.
[1][2] In 2016, a new split led to the creation of UNL-SD which later became the National High School Student Movement (MNL).
[7] In 2023, the organisation joined SUD Éducation Paris and Le Poing Levé Lycée unions in filing an appeal against the French government's ban on wearing abaya in schools.
The Union Syndicale Lycéenne frequently organizes protests and public demonstrations, blocades in high-schools, and took a prominent role in the 2023 social movement against the unpopular pension reform, with hundreds of schools[14]’[15] overrun throughout the country.