In order to support the Board's mission, the mission of Thornlea Secondary School is to prepare our students to be productive, responsible, lifelong learners; critical and creative thinkers; and self-sufficient, healthy, and well-educated individuals who are respectful of themselves and others, and are able to succeed in the world marketplace in terms of career aspirations.
The Mission of the York Region District School Board is “To advance student achievement and well-being through public education, which motivates learners, fosters inclusion, inspires innovation and builds community.”