Teachers’ Union for Danish Independent Schools (TUDIS) is a trade union for teachers and school principals employed by more than 750 private and independent schools (an alternative to the state school system) in Denmark. The Danish name of TUDIS is Frie Skolers Lærerforening (FSL).

The mission of TUDIS is to maintain and advance the professional, educational, legal and economic interests of the members.

TUDIS is focusing on up-to-date knowledge in regard to working conditions of teachers and leaders at Danish private and independent schools. TUDIS offers concrete solutions to problems and challenges experienced by its members.

TUDIS activities include negotiating a collective agreement with the Danish Ministry of Finance every two or three years, legal aid to members, local negotiations at private schools regarding wages and working hours and crisis/stress counseling.

The number of TUDIS members has increased every year and now exceeds 9.000.

TUDIS is a nonprofit private service organization owned by its members. The organization is led by elected leaders and is thus a democratic organization. The number of employees is approximately 37.