over-demanding parent; monster parent
Wasei-eigo term for a parent who makes excessive, selfish demands on schools or teachers on behalf of their child. Often used in educational contexts.
wasei-eigo (Japanese-coined English), from monster parent
See also: モンペ
Recently, the number of monster parents who make unreasonable demands on schools has been increasing.
That mother is a typical monster parent, causing trouble for the teachers.