The article defines and explains quality in education, applicable to schools, both locally and globally. The article reviews major policy statements on quality education by UNESCO, UNICEF, and the OECD. By examining some of the findings on quality in education, the article addresses some of the key issues in quality teaching and students' outcomes. The article argues that quality of teaching involves the establishment of quality in schools and engaging and motivational relationships with students in the classroom. Such environments and relationships are supportive, and inclusive, where teachers demonstrate a strong sense of self-efficacy, and beliefs in their students' abilities to master high quality learning. Students in such classes are regularly provided with learning tasks of high intellectual quality. Finally, quality teaching helps students to develop effective critical thinking skills.