Established in 1928 at a critical juncture following the Armenian Genocide and the fall of the first Republic of Armenia, the Armenian Educational and Cultural Society (Hamazkayin), maintains, advances, promotes, and preserves Armenian culture including, but not limited to, Armenian language, literature, history, culture, theatrical arts, heritage, dance, and music. The objective of Hamazkayin is to provide a sound education to the new generation, and to strive towards the preservation of the ethnic identity and cultural heritage of the Armenian people living outside their homeland. With chapters in Europe, the United States, Canada, South America, Australia, the Middle East and Armenia, Hamazkayin has been successful in establishing secondary and higher educational institutions which have prepared scholars, literary figures, and community leaders. It has also played a major role in the publication field, contributing to the advancement of culture in general.

With the joint efforts of the ACEC and Hamazkayin, an adult choir has been formed in February 2024, with the direction of renowned Maestro Artur Veranian. Rehearsals are held at the ACEC on Tuesday evenings. 

The Armenian Relief Society (ARS) a not for profit, independent, non-governmental and non-sectarian organization, was established in 1910 in New York City by Edgar Agnouni to provide educational and humanitarian assistance to Armenians throughout the world. The ARS serves the humanitarian needs of the Armenian people and seeks to preserve the cultural identity of the Armenian nation. The ARS is officially recognized by the United Nations as a non-governmental organization (NGO) with the UN Economic and Social Committee. Both Watertown (Shushi) and Cambridge (Leola Sasouni) chapters are based out of the ACEC. 

The Armenian Relief Society of Eastern USA Social Services (a joint committee of the ARS Watertown "Leola Sassouni" and "Shushi" chapters) has been reactivated an is now serving the community in collaboration with the Armenian Cultural and Educational Center (ACEC). The ARS Social Services works for the attainment of the basic daily living and societal needs of the community, supporting Armenians in the region.

Founded in 1933, the AYF serves as the youth organization of the Armenian Revolutionary Federation. The AYF is committed to the moral, social, and intellectual advancement of Armenian youth and is dedicated to the principles of freedom, democracy, self-determination, economic justice, social equality, and public service. Unity and cooperation are essential traits that allow members of the organization to work together to realize the AYF’s objectives.

Founded in 1918, Homenetmen prepares physically strong Armenians and exemplary citizens with the highest intellectual and spiritual virtues. It hosts boy and girl scout troops and youth teams in multiple sports. The organization operates on the “strong mind, strong body” foundation, providing Armenian youth with a moral, physical and psychological education outside the school environment. It also aims at teaching the youth the richness of the Armenian culture and heritage, while at the same time, preparing them to become outstanding law-abiding citizens in the countries in which they live.

The Hairenik Association Inc. is a publishing house fully owned and operated by the Armenian Revolutionary Federation, located in Watertown, MA. Hairenik Association publishes the Hairenik Weekly and the Armenian Weekly newspapers. The Hairenik, published in the Armenian language since 1899, has reported, analyzed, and commented on the historic events of modern Armenian history. The English version of the newspaper, Hairenik Weekly started its publication in 1934. In 1969 the paper’s name changed to the Armenian Weekly. Today, along with news of general interest to the Armenian-American community, the Armenian Weekly publishes editorials, political analyses, regular columns, and short stories and poems. Although the papers are located in Watertown, MA, subscribers hail from as near as Boston and as far as Buenos Aires and beyond. Moreover, the Armenian Weekly continues to meet the expanding needs of a more sophisticated, news-conscious Diasporan-Armenian public.

St. Stephen’s Armenian Apostolic Church serves a wide-ranging Armenian population and seeks to preserve Armenian religious and cultural traditions. St. Stephen’s offers Bible study for adults and operates three schools: a daily, bilingual preschool affiliated with the St. Stephen’s Armenian Elementary school; a Sunday school for students through grade twelve; and a weekly Saturday school for late middle school and high school students that teaches Armenian history, language, and literature. 

• St. Stephen’s Armenian Elementary School is a private elementary school that provides high quality Armenian and American education, develops a strong Armenian identity in each child, promotes and nurtures the Armenian language and culture, develops self-esteem and leadership skills in students. Established in 1984, the school has distinguished itself with its Armenian character, academic strength, devoted staff and low student-to-teacher ratio. The school is accredited by the Association of Independent Schools in New England, and its students have achieved top scores in the Comprehensive Tests of Basic Skills. Located in the Armenian Cultural and Educational Center, the school has a strong connection with the community in Watertown and surrounding towns. 

• St. Stephen’s Armenian Saturday School, established in 1937, caters to students who may or may not attend Armenian day school and provides an opportunity for children and youth to be educated in Armenian language.  Classes range from Nursery to twelfth grade. The curriculum consists of Armenian language, history and literature as well as songs and dances. The students learn their forefathers’ language, history, culture and traditions through newly published textbooks and workbooks.

• St. Stephen’s Sunday School provides an environment for spiritual growth for children from Nursery till the end of High School.