Eureka High School, located in Eureka, Missouri, is a secondary school in the Rockwood School District.

The high school opened in 1908 and was fully accredited within four years.

[2] Eureka has a co-educational student body of 1,678 in the 2018–19 school year.

More than half of the students come from LaSalle Springs Middle School, with a large portion of the rest coming from Wildwood Middle School.

The racial makeup of the school is 87.7% white, 6.0% black, and 1.9% Hispanic.