• *Number of students per an educational computer: This is the number of students, that is divided by the sum of the number for educational computer.
• * Electronic blackboard per a school: This is the number of installed electronic blackboards, that is divided by the number of schools.
• * Maintenance rate of class room LAN: This is the rate of class room that connects LAN out of all class rooms.
• * Maintenance rate of school affairs computer: This is the number of school affairs computer, that is divided by the number of teachers.
• * School affairs support system: This is the system that is used for creation or maintenance for attendance, business trip, holiday, timetable creation, school register, score, health, school meal, report card, guidance summary, etc..
• * School digital textbooks: School digital textbook: These are digital contents based on textbooks (as of 2018/03/01), and are used by teachers when teaching students with electronic blackboards, etc.
• * School CIO: This is the person that has overall responsibility for organizing school ICT (internet and communication technology) and is person in charge of executing the vision.

*Number of foreign Children - indicating the number of Children who does not have Japanese nationality.

*The number of foreign children is the total of the students of national, public and private schools.

*Rate of the number of foreign Children is the percentage of all enrollment of Children on public Elementary school in Taito-ku.

*Number of children returned from abroad - This is the sum of Children in national, public and private schools, who continuously stayed oversea more than 1 year and returned within previous school year

*The number of children returned from abroad is the total of the students of national, public and private schools.

*Rate of the number of Children returned from abroad is the percentage of all enrollment of Children on public Elementary school in Taito-ku.

*Long-term absentees: Students who were absent from school more than 30 days in total in the previous year.

*The number is the total of the students of public and private schools.

*Rate of the number of long-term absentees on school is the percentage of all enrollment on public elementary schools/public junior high schools in Taito-ku.

*Reasons for long-term absentees are, illness, economic reasons, school truancy and so on.

• * https://www.mhlw.go.jp/toukei/saikin/hw/ishi/20/dl/R02_toukeihyo.pdf

• Number of firing of buildings is the research data of 2008 school year
• Number of traffic accidents is the research data of 2009 school year
• Number of recognized criminal offenses is the research data of 2009 school year
• 【Number of occurrence per 1000 persons】 is calculated as follows; each data divided by population as of 2010 academic year data and then multiplied by 1000.

* Community school (school management council system) is the system for utilizing opinion of parents and local residents for public school management.In the community school, the council which is consists of parents and local regidents is set up, and the opinions of parents / local regidents can be reflected on the school management through the activities such as approving basic plicy of school management, and providing options on educational activities. (Reference: MEXT)