It’s not just students that you may find in yearbooks in Ancestry.com‘s “U.S., School Yearbooks, 1900-1990.” There are teachers and other school employees as well.
This 1941 Gridley, Illinois, yearbook from Gridley High School contains a picture of my great aunt, Margaret Habben. She taught in Gridley before enlisting in the Women’s Army Corps during World War II.
These yearbooks are another database whose index at Ancestry.com was apparently created by OCR. Aunt Margaret is in the index as first name Margaret last name Habben-Homemaking.