High Quality Content by WIKIPEDIA articles! Okolona High School is a public high school located in Okolona, Mississippi (USA). It serves grades 9 - 12. It is part of the Okolona Municipal Separate School District. The school nickname is "The Chieftains". They boast athletic teams in track, tennis, football, baseball, softball, and basketball. They have a vocational-technical school, JMG, art classes, and a drama club. Okolona High School also provides students with free after-school tutoring in English, Reading, Science, Math, SATP History, SATP English II, and SATP Algebra I.