Mr. Callahan teaches band at Grandview Middle School and Grandview High School. At Grandview Middle School he teaches 4 ensembles : 6th Grade Band , 7th Grade Band, 8th Grade Band, and the GMS Jazz Ensemble. Mr. Callahan is in his third year of teaching and his second in Grandview. At Grandview High School, Mr. Callahan teaches Marching Band, Freshman Band, Concert Band. He organizes All-District/All-State auditions, Solo and Small Ensemble Festival, and assists with sectionals for Jazz Orchestra and Symphonic Band. When not teaching at GMS or GHS, Mr. Callahan loves to play disc golf and spend time with his wife and newborn daughter at home.