A kodencho was an account book made to report to the central government on the results of koden (research of public paddy fields in a ryoseikoku [province]) by a kodenshi (koden researcher) or a kokushi (provincial governor) sent by the central government under the ritsuryo system in ancient Japan.
校田帳（こうでんちょう）とは、古代日本の律令制において中央政府派遣の校田使または国司が、令制国の校田の結果を中央政府を報告するために作成された帳簿のこと。