The Alexander Technique Affiliated Societies (ATAS) consists at present of 18 national societies of teachers of the Alexander Technique. They recognise each others’ professional qualifications and agree to maintain the same standards for the training and professional conduct of Alexander Technique teachers worldwide.
(AMMAS is a sister-organisation to ATAS, see below).
Meetings of societies for the formation of ATAS started in the 1990s.
Articles and reports on ATAS
‘Report of meeing in Sydney’ (no author).
‘International liason’ by Dorothea Magonet reports on a meeting of the International Affiliated Societies in June 1997.
‘A procedure for changes to the international agreement among the affiliated societies of teachers of the Alexander Technique’ by Elisabeth Sigurdsson.
‘Affiliation takes shape’ by Jamie McDowell.
‘Affiliated Societies reprensentatives meet in Germany’ by Jamie McDowell.
‘Report of Affiliated Societies reprensentatives meeting’ by Sue Holladay.
‘Affiliated Societies meeting, 2008’ by Jamie McDowell.
‘Affiliated Societies report’ by Brita Forsstrom.
‘Report from the ATAS meeting, Holland, April 2012’ by Brita Forsstrom.
‘Sharing diverse practices’ by Sue Fleming.
‘Sharing summit’ by Sue Fleming.
‘A summit on sharing’ by Sue Fleming.
1985 membership information (this is before the creation of ATAS and many national societies did not exist).
2017 membership information as presented at a AMMAS meeting.
AMMAS is a sister-organisation to AMAS, being Annual Meeting of Teaching Members of the Affiliated Societies. It is a week-long residential, informal, non-profit meeting and is restricted to about 50 teachers. Its first meeting was in 2001 in Denmark. It has since taken place in Austria, France, Germany, Spain, Switzerland. 
Articles and reports on AMMAS
‘Tenth annual meeting of teaching members of the affilaited societies’ by Marion Israel.
‘Professional development in the sun’ (no author).