Keynote speeches: 'Teaching in small and large class sizes: conclusions from research on the effects of class size on teaching, pupil attention and pupil relations' - Peter Blatchford, professor in psychology and education, Institute of Education, University of London. 'Background and evolution of class-size research in the United States (1985-2007)' - Charles Achilles, professor of the College of Education and Human Services, Seton Hall University, New Jersey. 'Smaller classes as facilitating conditions for education reform in the Asian context' - Ip Kin-yuen, academic adviser to the Centre for Development and Research, HKIEd. Other speakers include: Dr Park So-young, from the Korean Educational Development Unit, Professor Ieong Sao Leng, from the University of Macao, and Professor Susan Wright, from the National Institute of Education, Singapore. Tin Ka Ping Lecture Theatre, Hong Kong Institute of Education, Tai Po, today, 9am to 4.30pm.