As a teenager, Armstrong continued to publish poetry and develop her literary voice by reading and listening to works by Aboriginal authors such as Pauline Johnson and Chief Dan George, who she identifies as her early influences. In 1978, Armstrong received a diploma of Fine Arts from Okanagan College and a Bachelor of Fine Arts degree from the University of Victoria where she studied Creative Writing. In 2009, she obtained a Ph.D. in Indigenous Environmental Ethics from the University of Greifswald in Germany. In 1978 Armstrong began employment with the Penticton Band in a number of cultural and political roles. She also worked as a researcher, consultant, and writer at the En'owkin Centre (Lutz 13 and Petrone 140). The En'owkin Centre, located on the Penticton Indian Reserve and operated exclusively by the six bands of the Okanagan Nation, is managed in conjunction with Okanagan College and the University of Victoria. It has the goal of providing students with a strong cultural and academic foundation for success in further post-secondary studies ("En'owki"n and Petrone 140). The objectives of the society which governs En'owkin, as Armstrong describes, are "to record and perpetuate and promote 'Native' in the cultural sense, in education, and in our lives and our communities" (qtd in Lutz 27). To support these objectives, the En'owkin Centre created the Okanagan Curriculum Project (Lutz 27). This project develops school curriculum that presents Okanagan history in an accurate and dignified way (Lutz 27). Armstrong and her fellow members on the Okanagan Tribal Education Committee believe that Okanagan people must tell their own stories. The curriculum project founded the Learning Institute, which provides adult Native people with skills in research and writing so that First Nations individuals can develop quality, correct, and appropriate information for the project (Lutz 28). In 1980, the curriculum project founded Theytus Books Ltd., the first publishing house in Canada owned and operated by First Nations people. It is run as a division of the En'owkin Centre (Lutz 28 and "Theytus"). The En'owkin Centre's programs help to provide Theytus with proficient employees who work collectively in efforts to produce and promote appropriate reading material and information created by Native authors, illustrators, and artists (Lutz 28 and "Theytus"). Appointed in 1986 as the Executive Director of the En'owkin Centre, Armstrong continues to serve in that position.