The Shokuiku Basic Act was established in 2005, and amidst the nationwide implementation of
nutritional education, this research is involved in developing a “diet step-up guide” as an educational
material to achieve ongoing and effective nutritional education in schools.　According to the annual
lifestyle trends over three years, the percentage of students whose “sleep time” is “eight hours or
more” decreased between the first and third years, but the percentage of students who got “less than
eight hours" also decreased.　Further, the percentage who “ate breakfast every day” increased
between the second and third years.　According to a comparison of the educational material used in
the same academic years from the first through to the third year, an improvement in lifestyles could
be seen in “sleep time” and “morning excretions”.　From these results, it can be said that positive
effects of using the teaching materials continuously over three years were obtained.　Further, regarding
the items on “sleep time” and “breakfast details” in the educational materials, we added specific
targets that enable students to develop practical abilities in improving their lifestyles, with the aim of
improving the quality of the teaching materials.