Harmony Grove High School is a public junior/senior high school that provides comprehensive secondary education for students in grades seven through twelve in Haskell, Arkansas (with a Benton postal address), United States.

The assumed course of study for students follow the Smart Core curriculum developed by the Arkansas Department of Education (ADE).

Students complete regular (core and elective) and career focus courses and exams and may select Advanced Placement (AP) coursework and exams that provide an opportunity for college credit.

For 2012–2016 school years, the school participates in interscholastic competition within the 3A Classification and 3A-5 Conference administered by the Arkansas Activities Association (AAA) in such sports as football, soccer (boys/girls), golf (boys/girls), cross country (boy/girls), basketball, baseball, softball, and competitive cheer.

[5] Benton Harmony Grove won the state softball championship for three consecutive years (2002, 2003, 2004).