We had in reality the choice between 2 schools, a 3rd would have been a hit and miss, so you need ot be realistic unless you are prepared to go private.
So, no. 1 is distance, can you child go to and from school on its own. DD has a 40 minutes walk but that's nothing for most children in our borough.
Ofsted needs to be taken with a pinch of salt. How old is it, has there been a leadership change or change in strucutre like council to academy. If there are negative points, what exactly are they and how important are they for you.
For us the whole feeling of the school was important. Obviously secondary children aren't mollycoddled like primary but still, if the school puts emphasis on general well being on par with grades and attendance, it is worth a lot. If you can see the school then it is important to see how confident the students are with the teachers, you are normally shown around by Y7/8, so children who haven't been at school that long and it shows a lot to see how they interact with the teachers and also how the teachers talk to them.
For example we found it important that the school has a section staffed with SENCO teachers, available to all children, all day long. They can go and speak to people in confidence, no questions asked, no judgement.
Grades - it is not just the GSCE and A-level but also the attainment 8 score, showing the progress they made. Also, will they push Y7 straight into sets and if so based on what? DD's school is unusual, they only have sets for maths, PE and arts in KS3, which fits DD a lot as it means she is within her form/buddy form for most subjects and could form close friendships.
The school has one of the highest achievements in England, so sets are not all, something schools may push as the ultimate level of achievement.
If your child has a special interest it may be worth looking how this is supported, so be it music, sports etc. Saying that DD's school had a really good MFL programm, new head changed it to just one MFL to the bitter disappointment of parents. Things will change and you need to have some flexibility.
DO NOT go by where her current classmates will go. DD was in a mixed year of 60 in primary, around 20 girls of this group are at her current secondary which has an intake of 240 girls (8 form). She sees exactly 4 on a regular basis and none of them are close friends. She made new friends very easily.
After school clubs can be a bit hit and miss, DD liked them for a while but in the end preferred the ones she did outside school. Saying that she isn't into sports and most of the clubs are either music or sports orientated in her school, especially for the lower year groups.