The OFSTED report is good for this school, if what parents choose to wear affects the achievements of the dc I'd expect it would be reflected in reports?
Skerne Park OFSTED report
My dad's house is near this school, and yes there are several parents (mums) wearing pjs on the school run, but the children are clean and tidy, as as it's the children who attend the school and are obliged to wear what the school says, what the parents wear to get the dc to school clean and tidy is really none of the heads business or the business of other judgey parents.
Even if it laziness, it's none of my business what someone else wears, they are getting their dc to school. It has zero impact on me, my child's education so why on earth would someone else wears to drop their dc off at school bother me?
Parents evenings etc are different, but again, none of my business, and while I'd do a double look, I'd not be sneery or write them off as lazy as I have no idea what their lives are like.
I've seen parents be told on here many times to take dc to school in pjs if they play up getting dressed. But now on here people are saying there's no reason why a child should be at school in pjs and asking nooka why she has done it.
Its the opposite at my dds school, mums who are groomed, smart, full make up etc, are the ones judged here as being vain, snobby. You can't win.
I'm usually too busy worrying about what I'm being judged about (probably my unbrushed hair) to actually notice what others are wearing but from reading these threads seems I'm in the minority.