The present invention can be utilized as a data that allows students to not only keep accurate records of their own activities, but also to look back on their own lives by organizing, recording, and accumulating their own subject and non-subject activities. The school activity authentication method for entering the activity contents of middle and high school students according to the present invention is a student activity DB (11), which records information on the subject activities and non-extracurricular activities of middle and high school students by accessing the wired/wireless Internet using the student terminal (10); and the activity information verification unit 15 of the platform server 14 that verifies the information of the student activity DB by accessing the wired/wireless Internet using the teacher terminal 13, and the student verified by the activity information verification unit 15 Verification activity record DB 17 for storing information of the activity DB, and checking the information of the verification activity record DB 17 through the teacher terminal 13 or the student terminal to check the contents of each other
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