Through the school's PTA, the conservative parents and progressive parents had already had friction over 'Peace Education' by some teachers, making an issue whether it was 'Ideologically Prejudiced Education' or not.
同校では、かねてより一部教員による「平和教育」が「偏向教育」か否かを巡ってPTAなどにおいて保守的な父母と進歩的な父母の対立が生じていた。