The graduation list is compiled from either the Repository newspaper article and/or Commencement programs. The Plain Local School District official list of graduates is what is listed on those two items.
Class of 1931 – 12 Graduates
- Graening, Alma E
- Grant, Beulah
- Gribben, Elmus
- Henning, Charles
- Holl, Jane
- Jerome (Degialomo), Margarete
- Mohler, Myrtle
- Nimon, Paul
- Ruch, Lucille
- Werner, Opal
- White, Joseph
- Yarick, Velma
