Cindy Kling told The Daily Herald she was the second-highest winner on the TV game show, after a $1 million winner four years ago.
The show was recorded in September in Los Angeles, and Kling had to keep her winning a secret until the show aired Friday.
Kling says her son was on the show about 15 years ago. She applied online for 12 years until she was finally accepted as a contestant.
Kling is a part-time Everett Community College teacher and contract instructor for Boeing.