In 1938, Delta Central School, originally built in 1926 and used as an elementary school (grade 1–8), was enlarged and updated for senior students while a new elementary school was built on the same plot of land, the site of DSS today.
In 1938, Delta Central School, established in 1926 as an elementary school (grades 1–8), was expanded to accommodate high school students while a new elementary school was built on the original site of DSS.