My dd was at an Outstanding School, but I am not sure why it was outstanding. There were a couple of really good teachers, but because one of them in Reception was poor, a result of which was the year was well behind.
Up until Year 2, there was reading only once a week, no handwriting practice, so letter formation was poor, spelling phonetically only, no spellings to learn. PE just once a week, which was in the hall and seemed to consist of being a bean!!! (jumping, runner etc!!), but hardly ever outside on their great big field and then mostly cancelled. Maths was OK (the Year 1 teacher specalised in this), but a lot done on worksheets. 28 in the class with only one assistant, who helped the three children who had extra needs.
However, they had a healthy eating award, schools art mark(?) award, they did Wake up and Shake Up and had lots of 'caring' SEAL assemblies, that ticked all the boxes towards the Ofstead ranking.
They won't be having an Ofstead this year, as they were outstanding on the last one, so they have a year's grace before the next one.
It wasn't awful, just not what I expected if I am honest. We moved to an Indpendent school this September, I know a lot is written about the private sector, but I never thought there would be such a gap in the differences.
I too would be interested as to what goes to marking a school 'Outstanding', as like us, most parents have not much else to go on.