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2. Aoki, Jun’ichi and Masashi Horiuchi (2014). Kyoin no taboka wo meguru keii to kyoin kinmu jittai chosa ni kansuru ichi kosatsu: Gakko ni okeru kokateki na taboka taisaku no kihonteki ronten wo saguru (On the teansition of teachers’ workload and the surveys of their working conditions: Woth the focus on more effective strategies for reducing their overwork). Nihon Joshi Taiiku Daigaku Kiyo (Bulletin of Japan Women’s College of Physical Education), 44, 17-26.
3. Department for Education (2014). Teachers’ Workload Diary Survey 2013 Research Report.
4. Grafen, Alan, and Rosie Hails (2002). Modern Statistics for the Life Sciences, New York: Oxford University Press.
5. Ito, Kazue (1963). Gakko keiei no kindaika nyumon (An introduction to the modernization of school management). Meiji Tosho.