I agree that teachers shouldn't pay for themselves!
And it doesn't make a lot of difference when it's a large group. But my dc is in y12 and a teacher is taking a group of 5 pupils to see a play near the end of term. This is just a jolly - the play has no relevance to their course. Looking at the amount we're being asked to pay for the ticket, it's clear that the cost of 6 theatre tickets is being shared between the 5 pupils. They will buy train tickets on the day (no advantage to early booking for this journey) and again, the guide amount given looks like the students are covering the teacher's ticket. This means that the cost of the whole trip is going to be nearly £7 more than if they went independently (becoming an almost 40 quid day out rather than a bit more than £30) which feels like a lot for a nice day out.
Is this fair? How small a group would it be fair to ask to split the teacher's costs? Should school pay for the teacher?
DC was somewhat indignant - I pointed out that actually they've done pretty well from school this year in terms of getting stuff for free, and that to moan now would be churlish. So this isn't a "should I complain to the school?" rant, hoping for a bit of discussion on how schools handle these things.