Apart from the "gold plated pensions " bollocks, I'd like to pick up on a genuine misunderstanding.
There is a difference between parental interference and parental support.
Teachers do not need parents ringing up or emailing all the time about every last thing, or arguing why "darling Jocasta" didn't deserve that detention, or can't do it because she has dance class, or something else equally undermining to the school behaviour management system.
This wastes teacher time, undermines their authority, and is a major pain in the backside. You would have had a letter or email explaining exactly why they got a detention, and I'm sorry but your precious darling will never tell you the whole story or context.
Parental support means the parent has read and understood the home-school agreement that they signed. Parental support means that when "precious Louis" gets bollocked at school, he also gets bollocked at home by people whose opinion matter to him. Parental support means sending your child to school on time, fed with actual food not energy drinks, with pens and pencils etc.
I teach in an affluent catchment area that I could never afford to live in. The less affluent kids tend to be the nicer, and actually we tend to get better parental support for them. The more affluent kids tend to think they can argue their way out everything, think that rules don't apply to them, and then Mummy will rescue them anyway. Which she will try to do. That's parental interference.
Rant over,
Oh, and my sixth form students just love getting the paints and sugar paper out to eg draw structural formulae, and love getting sticker... 