Your Union


The ASTI is Ireland's main second level teachers union and represents 18,800 teachers in community schools, community colleges, comprehensive schools and voluntary secondary schools attended by 80% of all second-level students.

The ASTI acts as a professional association voicing the concerns and interests of the teaching profession at second-level and as a registered trade union, which protects teachers and fights for improvements in their pay and conditions of employment.

Included among our members are class teachers, school principals, deputy-principals, assistant principals, special duties teachers, temporary teachers, part-time teachers, home-school liaison teachers, guidance counsellors, learning support teachers and resource teachers.

The union represents teachers in:

  • voluntary secondary schools
  • community schools
  • comprehensive schools
  • community colleges

Established in 1909, the ASTI is a registered trade union affiliated to:

The objects and aims of the ASTI are:

  • to promote second-level education
  • to unite and organise all second-level teachers
  • to promote and protect teachers' interests
  • to maintain and improve teachers' conditions of employment