You may think that, but it can work.
When dd1 was coming up for secondary, we'd only really considered one school, but the year before they tried something a bit silly with the new entrants, and although they backed down it then meant we decided to look at the other school which had a much worse reputation.
Original school: We were shown round by the head. Who denied that there was any bullying at all. Eventually after several of the parents insisted she sighed heavily and said (word for word) "if someone insists they're being bullied, then we get them together so they can discuss it with the bully and they never complain again." Red Flag number one.
Red Flag number two was the things they were telling us that they thought were wonderful. "We have the most amazing trips. Every year two of our year 12s get a chance to go to Florida..." but in a year of around 200+ the chances are your dc would never actually get a chance on ay of these wonderful trips.
And I think the one that really made me roll my eyes was "in order to help their languages, we teach a couple of lessons of history and geography every term in a different language." Great in theory. In practice that almost certainly means a lesson that no one understands so a total waste of time-but looks great on paper.
Apparently no child ever misbehaved due to their wonderful discipline system too...
If you drilled down into almost all their "why we are so wonderful" they were either gimmicks that would benefit almost no one or gimmicks that almost no one would benefit from.
Then we looked round the other. Very sceptically. We were assigned a sixth form lad who's first comment was "the music block looks a bit rough. We won't go behind it because that's where the smokers hang out."
Sounds bad?
But actually at the end we felt that we knew the good, the bad and the ugly from the school. We felt we could trust the things he said were good because he hadn't hidden the bad.
We chose the second school and it was the right decision. And we were also right in thinking that he'd given a very good overview of the school.
Later dh became a governor and mentioned this lad to the head, who chuckled and said that he was an unorthodox young lad, and they'd been nervous about letting him show people round because there was no guarantee what he would say (which was very true!) but it was very good for the lad to take responsibilities, having had a very shaky start to the school, and an "interesting" background.
But genuinely he sold it to us.