ＬＡＴＡＭ Ｒｅｆｕｎｄ Ｐｏｌｉｃｙ ｆｏｒ Ｎｏｎ－Ｒｅｆｕｎｄａｂｌｅ
https://support.google.com/edu/classroom/thread/322514241?hl=en&sjid=12251325791952834113-AP
articlebook.blog
https://support.google.com/edu/classroom/thread/322514241?hl=en&sjid=12251325791952834113-AP articlebook.blog