The relationship of classroom teachers’ leisure time physical activity and their conduct of physical education classes was investigated. Eighteen 4th- and 5th-grade teachers reported on their leisure physical activity and had their physical education classes observed systematically during 4 consecutive semesters. Correlational analyses confirmed that more active teachers taught physical education differently from those that were less active. Teachers who were more active provided students with increased physical fitness activities, and the teachers themselves spent more time promoting physical fitness during lessons. The study provides some support for the hypothesis that physically active teachers provide higher quality physical education.