The Japanese government has announced the policy to apply large-scale renovation to existing school facilities for anti-earthquake reinforcement. Schemes are being planned for simultaneous green renovation to improve environmental efficiency and indoor environmental quality (IEQ) of classrooms. Questionnaire survey for 625 schools around the country was carried out to investigate the green techniques employed in current renovations in schools. Results showed that layout of the rooms was rarely changed to improve IEQ. Indoor finishing materials were often redone, and appropriate selections of materials could help improve acoustic and lighting environ-ment. Increasing insulation was regarded unnecessary in many cases. Eco-glazing was uncommon despite the large area of windows inschools. Green curtains on exterior walls or biotopes were not popular, but their importance as educational resource needs to be emphasized. HVAC systems were either unprovided or inadequate. Opinions of teachers on IEQ of classrooms need to be reflected for planning green renovation.