They need to continuously evaluate students’ performance using diverse assessment techniques, and provide remedial support to struggling learners (OBEC, 2013a). They must be knowledgeable about and use information and communication technology (ICT) to enhance learning, and be inclusive of students with special needs and from different backgrounds. They are expected to prepare students for active participation in the Association of Southeast Asian Nations (ASEAN) community and the competitive global marketplace, while also promoting Thai values and culture. Teachers and school leaders are instrumental to achieving these overarching goals, and they will have a good chance of success if Thailand makes efforts to strengthen teacher preparation, support continuing teacher development, enable teachers to focus on the classroom, enhance school leadership and more efficiently manage its school workforce.