Early life and education McCallum was born on May 1, 1952. She  received a Dental Nursing Diploma from the Wascana Institute of Applied Arts and Sciences in Regina, Saskatchewan, in 1977 and a dental therapy diploma at the School of Dental Therapy in 1979. She earned a Doctor of Dental Medicine degree from the University of Manitoba in 1990. Senator She was appointed to the Senate by Prime Minister Justin Trudeau on December 4, 2017. 
Early life and education McCallum was born on May 1, 1952. She attended a residential school from the age of five. She received a Dental Nursing Diploma from the Wascana Institute of Applied Arts and Sciences in Regina, Saskatchewan, in 1977 and a dental therapy diploma at the School of Dental Therapy in 1979. She earned a Doctor of Dental Medicine degree from the University of Manitoba in 1990. She was appointed to the Senate by Prime Minister Justin Trudeau on December 4, 2017. On May 6, 2021 she was named Chancellor of Brandon University. She is the first Indigenous woman to hold the post.
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attended a residential school from the age of five. She
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Senator
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On May 6, 2021 she was named Chancellor of Brandon University. She is the first Indigenous woman to hold the post.