Oh dear you may have just got me started!
As you are all well aware my sons have been to quite a few schools and the inspection reports are not to be trusted! I now only look at an inspection report to look at pupil intake both socially and academically.
My sons have been to two schools where the inspection reports were outstanding and I can tell you that they were virtually the exact opposite. I also went to see a school with and outstanding report and there was NO way my son was going there. The school that DS1 is now at had a mediocre report but the reality is very much different and the pastoral care is exceptional. It was satisfactory academically but yet I know that academically it is fantastic for all abilities.
Its also worth researching who the inspectors are because I noticed with X schools that other X school heads or teachers inspect them so I start to wonder if its an "I'll scratch your back if you scratch mine"!
Reports are worth reading as sometimes it gives you more info that you didn't get from a report or visit, but gut instinct also helps. Don't be fooled by great facilities too.
P.S. X means a specific type of school but it would be libellous to mention them more specifically!