Trade Union The PTU is a trade union, a professional body, and a social concern group. Over 100,000 teachers and education practitioners in Hong Kong , from kindergartens to universities, have joined the union, which aims at uniting co-workers, protecting their rights and providing them with various welfare services. Educational Body As a professional body on education, the PTU strives to improve education quality through promoting of teachers’ professionalism, and through advocating of education policies, which ensure an environment for every student to learn and grow with sufficient assistance and care. Social Organization As a social concern group, the PTU actively participates in various social actions for the justice, well-being and democratic rights of the people in Hong Kong and China.