I first saw this film over a decade ago and recalling from what I saw of it to be an abysmally lame and foul film. I then decided to have a second look a couple of years ago to see whether my initial reaction was correct and, if anything, I was too kind to it.
This is as bad a film as I've ever seen. It's not just because the film has gutter-level humour and is relentlessly crude. It's not just because it's technically inept and cheap, with 'outside' scenes obviously filmed on interior sets. And it's not just because a good cast and director is wasted on such a filthy, demeaning film.
Above all, what makes this film so wretched is the inherent dishonesty of this film, that it's an 'anti-establishment' film in the style of MASH. The notion is totally absurd when the subject of the film is one of the central pillars of the establishment in society - the police force. This is why their 'rebellious' behaviour is mainly targeted at the oppressed like homosexuals.
Genuinely 'anti-establishment' films of this era had the heroes attack the privileged, elitist echelons of the college scene (Animal House) or the armed forces (MASH). 'The Choirboys' is the direct opposite and a completely repellent 'establishment' film.