Lois Johnson completed a PhD in Music at Brigham Young University in 1975. Prior to that she completed her bachelor's and master's degrees in Music, also at BYU. She also completed extensive doctoral studies at Indiana University. She taught at American Fork High School for twelve years before transferring to Lone Peak High School, where she has been teaching for the last sixteen years. She also taught on the voice faculty at BYU for over twenty years and also maintained a voice studio in her home. As a BYU faculty member she traveled to Vienna, Austria, as an instructor for the Study Abroad program.
Throughout her career Lois has served on the AP Music Theory Development Committee, which creates national AP tests. She has also spent long hours grading AP tests as part of the Education Testing Service.
As an educator Lois has garnered multiple awards, including the 1991 Utah State Sterling Scholar Most Influential Teacher, the Utah Outstanding High School Music Educator (2000), Lone Peak's Teacher of the Year (2005), and the Alpine Foundation's Accent on Excellence Award (2006).
Johnson has been a member of and soloed with the Mormon Tabernacle Choir and is currently the director of choirs at Lone Peak High School in Highland, Utah, and an adjunct faulty member at Utah valley University.
At the 2013 conference of the Utah Music Educators Association Johnson's top choir, the Chamber Singers, were asked to perform. Lois also presented a lecture during the conference.