Labour strife in the education sector in Ontario has repeatedly highlighted the precariousness of certain types of teaching and learning that are delivered under the catch-all designation extracurricular. This paper reviews education legislation in Ontario over the past 40 years that has impacted teachers' right to strike; examines how teacher unions and the provincial government targeted extracurricular activities during collective bargaining; and considers how extracurricular activities have come to be an expected part of public education.