関連ワード:  article 4 section 2 code of ethics for professional teachers    article 4 section 2 code of ethics    article 4 section 2 code of ethics for teachers    article iv section 2 of the code of ethics for professional teachers    article 3 section 2 code of ethics for professional teachers    article 2 section 2 code of ethics for professional teachers    article 5 section 2 code of ethics for teachers    article 1 section 2 code of ethics for professional teachers    article 6 section 2 code of ethics for professional teachers    code of ethics article 4 section 2 explanation