tender beautifully crafted production delved deep bitter sweet being irreverent pupils life embittered bus driver teachers personalities present subliminal debate story unveils adult characters seem familiar teachers bus driver one opinions plausible well known key incident happens bus sent circuit viewpoints time babble teenage energy kept control organisers trip mr harvey experiencing much pain throughout  reminds war damaged teachers understand irreverent pupilbr br rhidian brook producers deserve much acclaim well shaped british film acting unblemished scenes appropriate widely available yet seem given right opportunity