Linn-Mar High School (LMHS), located in Marion, Iowa, is the only high school within the Linn-Mar School District. A four-year public high school, LMHS provides a comprehensive curriculum aiding students in developing into life long learners and create opportunities for them to transition to post-secondary life.

Students at LMHS develop a four-year graduation plan which includes recommended courses for each grade year. A variety of courses are offered in the Blending Learning format, a combination of face-to-face and digital instruction.

Early college opportunities at LMHS are provided through Advanced Placement courses, Concurrent courses, Project Lead the Way, and off-campus Career and Technical courses.