Leighton graduated from Gresham High School in 1971. He earned his BS Degree in Education at Portland State University in 1979. Leighton was a teacher in the Beaverton School District, at Sunset High School.
Leighton married Terri Garner on December 21, 1974 in Gresham, Oregon.
In 1994 Leighton earned the Presidential Scholarship Mentor Teacher Award.
Leighton enjoyed fishing, hiking, going to movies, baseball (where he was an umpire and coach), and coaching football.
Leighton is survived by his loving wife Terri, Portland, OR., brother, Mark Johnson, Portland, OR., mother-in-law, Joanne Aden, King City, OR., and his three brother-in-laws, Steven (Pam) Garner, Tigard, OR., Ted (Becki) Garner, Gresham, OR., and John (Roxanne) Garner, Damascus, OR.