He began coaching the De La Salle High Spartans in Concord, California in 1979 when he was 25 years old.
His second season resulted in their first appearance in the California Prep Football State Rankings and began De La Salle's evolution into a perennial champion.
Ladouceur is the all-time winningest coach in California high school football and has led the De La Salle program to numerous championships.
The film, which stars Jim Caviezel as Coach Bob Ladouceur, Laura Dern as Bev Ladouceur, Michael Chiklis as assistant coach Terry Eidson, and Alexander Ludwig as running back Chris Ryan, is about the record-setting 151-game 1992–2003 high school football winning streak by De La Salle High School of Concord, California.
De La Salle head coach Bob Ladouceur retired in January 2013 after winning his last Open Division state championship in December 2012.