If you wish to succeed in life, make perseverance your bosom friend, experience your wise counselor, caution your elder brother, and hope your guardian genius.
Dick Mills was in charge of sound effects and all the rest then, and he put the voice through a ring modulator or whatever gizmos he'd got at the time to make it sound a little more electronic.
The motives of these parents vary, many parents don't like the curriculum being taught to their kids, or are wary of the threat of peer pressure or the presence of drugs or violence lurking in too many of our schools today.