David Mastin
David Mastin is the president of the Elementary Teachers’ Federation of Ontario, who is currently focused on addressing classroom complexity and class size as top priorities in upcoming negotiations with the provincial government.
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Recent news mentions
David Mastin is the president of the Elementary Teachers’ Federation of Ontario, a union that represents more than 80,000 education workers.
Teacher absences are on the rise in Ontario, raising concerns about violence, burnout and gaps in learning
Canada· 2026-05-29
David Mastin, president of the Elementary Teachers’ Federation of Ontario, said Mr. Calandra is disregarding the voices of front-line educators.
Ontario Education Minister to release EQAO results next week, won’t apologize for delayCanada· 2025-11-24
David Mastin, president of the Elementary Teachers’ Federation of Ontario, said it should not be in Mr. Calandra’s power to delay the release of the test results.
Ontario Education Minister says he is withholding EQAO test scores, prompting outcryCanada· 2025-11-21
David Mastin, president of the Elementary Teachers’ Federation of Ontario, called the bill a 'travesty.'
Ontario passes controversial bill giving the province more power over schoolsCanada· 2025-11-20
David Mastin, president of the Elementary Teachers’ Federation of Ontario, emphasized the importance of reducing class sizes for achieving learning goals.
Alberta teachers say they aren’t equipped to help students with complex needsCanada· 2025-10-11
