退学届の提出とともに様々な書類の発行を願い出る際は、後で困らないよう、どんな形式のどんな書類が必要か、日本側の事情を踏まえて明確に説明しましょう。成績証明書には校長の署名が必要で、さらに学校の封筒に厳封されていなければなりません。また、在籍証明というものはこちらの学校にはありませんので、以下のように依頼し、出席日数の証明を作成してもらう必要があります。推薦状も準備しておかれると良いでしょう。

Dear TEACHER’S NAME,
I have to inform you that our family will return to Japan in MONTH and therefore our son/daughter will leave your school on DATE. Would you be kind enough to forward NUMBER copies of school reports with headteacher’s signature (each of them should be in a school envelope and sealed), a certificate which certifies that he/she has been a pupil/student of the school from DATE to DATE and the record of attendance ? May I also ask recommendation letters about son/daughter from NAME OF HEADTEACHER ?
I would like to take this oppotunity to thank your excellent teaching staff for all the help they have given with NAME’s study and for making his /her time at your school interesting and enjoyable.
Yours faithfully

笹川　真理子