Marianna High School is a public high school in Marianna, Florida. It enrolls 771 students in grades 9–12, and is the largest of five high schools in the Jackson County School Board. It is accredited by the Southern Association of Colleges and Schools. The school's mission statement is: Marianna High School, in partnership with parents and community, will prepare its students to achieve learning, thinking, and life skills necessary to become successful, respectful and productive citizens in today's diverse society through challenging and equitable learning experiences.