Uniform can be important, most schools base uniform policy on middle class white children. Does the policy cover hairstyles and how?
Does the uniform consist of a white shirt that can be seen through? In that case most girls will wear a jumper even in the hottest weather to not have underwear on display. Are there options for Muslim, Jewish, JW, Sikh (insert faith or culture) students?
You might be white middle class but the way students from different backgrounds can be made welcome impact on your child as well.
No GCSE subjects are not compulsory, most schools stick to the ones that give the best progress 8 score but academies don't have to.
This can be a good or a bad thing depending on your child, You may have a child who is a brilliant artists, plays a musical instrument and wants to be an actor. Progress 8 will severely impact their choices.
SEN matters because how the school approach SEN impacts on all children in the school. When I'm teaching I use PowerPoints on a blue background because I am dyslexic, I also use a dyslexia friendly font.
If I have a student I know is dyslexic the background colour will change to the preference of that student. If I have two students who used different colours then they get a printout on paper that matcher 'their' colour.
It doesn't impact on the students who are not dyslexic.