OBESSU – The Organising Bureau of European School Student Unions is a platform for cooperation between the national school student unions active in general secondary and secondary vocational education in Europe. It was founded in April 1975 in Dublin, Ireland and brings together member and observer organisations from more than 25 European countries. All member-organisations are independent, national, representative and democratic school student organisations.

As OBESSU we stand together:

- to represent the views of the school students in Europe towards the different educational institutions and platforms
- to uphold and improve the quality and accessibility of education and educational democracy in Europe
- to improve the conditions in the secondary schools in Europe to promote greater solidarity, cooperation and understanding among the school students
- to put an end of the discrimination and injustice where they exist within the educational systems in countries in Europe

On the General Assembly all the member organisations of OBESSU gather to decide:

- the activities of the organisation (stated in the work program)
- the political alignment of the organisation (stated in the political platform)
- the form and the rules of the organisation (stated in the statutes)
- who will be responsible for fulfilling the work plan and lead the organisation until the next General Assembly