To test the propositions that collective bargaining has had little effect on teacher salaries but a considerable effect on school administration and governance, data were gathered on four aspects of educational labor relations in Canada and its provinces for the period 1930-1978. The four aspects were (1) the ratio of teacher salaries to per-capita income; (2) teachers' working conditions, as indicated by pupil-teacher ratios; (3) management rights clauses in collective agreements; and (4) the development of informal and formal collective bargaining. The salary-to-income ratio showed little relative gain over the period, indicating that teacher salaries are a function of the larger economy, not of militancy. Pupil-teacher ratios declined steadily from 1930, but especially after 1960, when most provinces had some form of formal or informal collective bargaining. Comparison of contract clauses reveals a shift from almost total management control to joint teacher-management control through bargaining, especially since 1960. This indicates a significant impact on school administration. Too little data were gathered to trace the development of collective bargaining, but bargaining legislation, strike rights, and arbitration exist in most provinces. (Author/RW)