Most students who attend Lambert reside in southern Forsyth County, an affluent area located between Johns Creek, Suwanee, and Cumming.

Lambert was built to alleviate over-crowding at South Forsyth High School, which is located 3.8 miles away on Peachtree Parkway.

This was in honor of Gary Davison's late son, who died soon after the school's opening due to SIDS.

The student body was 44.2% Asian, 42.7% White, 6.1% Hispanic, 3.8% Black, 3.0% Two or More Races, 0.2% Native American, and 0.1% Pacific Islander.

In 2022, Lambert iGEM won the Grand Prize in the high school division for their project CADlock, which utilized miRNA to detect for Coronary Artery Disease.

Sports teams at Lambert include competitive cheerleading, cross country, football, softball, volleyball, basketball, swim and dive, wrestling, baseball, golf, lacrosse, soccer, tennis, track and field, fencing and gymnastics.