The Association of Assistant Mistresses (AAM) was a

trade union A trade union (labor union in American English), often simply referred to as a union, is an organization of workers intent on "maintaining or improving the conditions of their employment", ch. I such as attaining better wages and benefits (s ...

representing female teachers in British secondary schools. The union was founded in 1884 as the Association of Assistant Mistresses in Secondary Schools Incorporated, the last part of the name later being dropped. Membership of the union grew steadily, reaching 1,000 in 1910, and 39,000 in 1978. That year, single sex unions were banned, and the AAM accordingly merged with the Assistant Masters' Association, forming the Assistant Masters' and Mistresses' Association.{{cite book , last1=Marsh , first1=Arthur , last2=Ryan , first2=Victoria , title=Historical Directory of Trade Unions , volume=1 , date=1980 , publisher=Gower , location=Farnborough , isbn=0566021609 , pag
11
, url=https://archive.org/details/historicaldirect0004mars/page/11

General Secretaries

:M. Quarrier Hogg :1921: U. Gordon Wilson :c.1943: O. M. Hastings :1960: Sheila Wood

References

Teacher associations based in the United Kingdom Trade unions established in 1884 Trade unions disestablished in 1978 Trade unions based in London