*The junior high school includes the first-half course of secondary education school, and the high school includes the second-half course of secondary education school.

• ・「学習用デジタル教科書」は、紙の教科書の内容を全て記載し、教育課程の一部又は全部において、学校で使用している紙の教科書に代えて児童生徒が使用できるものをいう。
• ・「遠隔教育」は、遠隔システムを活用した同時双方向型で行う教育をいう。（「『遠隔教育の推進に向けた施策方針』の策定について（通知）」（文部科学省、平成30年9月20日））
• ・「一学校あたりの大型提示装置の整備台数」とは、大型提示装置の整備台数を「学校数」で除したものです。
• ・「普通教室の校内ＬＡＮ整備率」は、校内ＬＡＮを整備する普通教室の総数を普通教室の総数で除して算出した値である。
• ・「普通教室の無線ＬＡＮ整備率」は、無線ＬＡＮを整備する普通教室の総数を普通教室の総数で除して算出した値である。無線LANに代えて、主に移動通信システム（LTE端末等）の活用を推進している自治体もあることから、無線LAN整備率が低いことをもって、学校ICT環境整備が進んでいないことを単純に示すものではない。
• ・「インターネット接続率（光ファイバー回線）」は、主たる接続回線が光ファイバー接続である学校数を全ての学校数で除して算出した値である。
• ・「インターネット接続率（30Mbps以上回線）（100Mbps以上回線）（1Gbps以上回線）」は、それぞれの学校数を「LTE等による接続を除く学校数」で除して算出した値である。
• ・「教員の校務用ＰＣ整備率」は、校務用ＰＣの総数を総教員数で除して算出した値である。
• ・「校務支援システム」は、校務文書に関する業務、教職員間の情報共有、家庭や地域への情報発信、服務管理上の事務、施設管理等を行うことを目的とし、教職員が一律に利用するシステムをいう。
• ・「指導者用デジタル教科書」は2018/03/01現在で学校で使用している教科書に準拠し、教員が電子黒板等を用いて児童生徒への指導用に活用するデジタルコンテンツをいう。

*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 Tokyo.

*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 Tokyo.

• * School full meal lunch: This is the school lunch whose contents consists of bread or rice (including the flour food, processed rice food and other foods, which correspond those), milk and side dish.
• * School partial lunch: This is the school lunch other than school full meal lunch, and the contents is consists of milk and side dish etc.
• * School milk lunch: This is the school lunch that consists milk only.

• *1 There is variances on the average costs by prefectures because the contents of school meal, or the number of implementation about school meal differs by prefectures. Therefore, the simple comparison is not possible.
• *2 The junior high school includes the first-half course of secondary education school.

• * Fire insurance is posted by calculating in new agreement (target is only the housing and 1-year contract) of research year.
• * Premium and insurance money are the total price of new agreement on research year, that is divided by the number of insurance policy.
• * Premium isn't adjusted about change and cancel.
• * Paid insurance money is the total insurance money paid on research year, that is divided by the number of accidents(insurance policy units).

• * Earthquake insurance is posted by calculating in new agreement of research year.
• * Premium and insurance money are the total price of new agreement on research year, that is divided by the number of insurance policy.
• * Premium isn't adjusted about change and cancel.
• * Insurance incidental rate is a rate of adding earthquake insurance, per fire insurance(housing) of new agreement on research year.
• * Household subscription rate is the number of earthquake insurance policy, that is divided by the number of household that is based on basic resident register(includes foreigner).

• * Premium is the total premium of new agreement on research year, that is divided by the number of cars with contract of insurance.
• * Paid insurance money is the total insurance money paid on research year, that is divided by the number of payments.
• * The liability insurance types include the following five, bodily injury liability insurance, property damage liability insurance,passenger accident insurance,personal injury insurance and vehicle insurance.
• * Auto insurance is contract of insurance, except driver's contract and special conditions.
• * Penetration of liability insurance is a rate of the number of cars with contract of insurance, per the number of all cars (without motor bike).

• 1 Educational cost (in total): This is the sum of school educational costs. The breakdown is as follows: Living expenditure (labor cost, educational activities cost, administrative cost, auxiliary activities cost, prescribed payment cost), capital expenditure (land cost, building cost, facility cost, fixtures cost, book purchase cost) and debt redemption expenditure.
• *2 Expenditure for school activity includes direct expenditure associated with students’ learning and formal school activities.

• Auxiliary educational activities cost: It does not include cost due to regular school education, but includes the cost that has close relationship with the school activities.

• *4 Book purchase expenditure includes the costs that spent on newly purchased costs, the replacement and the supplement (the insertion, the deletion, etc for regulations, statute book) for the ones which are categorized as a book, a series of books, dictionary, CD, video soft,and so on (out of the books equipped in school library, library room, classroom library and teacher room).
  (Reference: MEXT)

• * https://www.mhlw.go.jp/toukei/saikin/hw/ishi/22/dl/R04_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.