I was part of a skiing trip to the States, as a teacher. It wasn't during term time, it was the first week of the Easter holiday, so no time in school was missed. We also had a visit to Harvard, which surely must be regarded as educational.
If you think that being responsible for thirty teenagers, one of whom tells you five minutes before you leave, that she has a phobia of planes and screams the whole way there and back, ensuring that medication is taken, the Epipen for the one who has a peanut allergy, ensuring their well being and enjoyment is a holiday, then I'm here to say it's not. It was enjoyable, but the level of responsibility is enormous.
I've been on a trip to the Normandy beaches too and that was with a group of sixteen year olds who had just finished their GCSE exams, so not in school any more. If you had seen those young people at the American, British and German cemeteries, looking at the graves and realising that the people buried there were only a little older than themselves, if you had seen them read the letters in the museum at Caen, seen them on Omaha and Gold beach, you would realise the impact the trip had on them. Far more powerful than any TV programme or interactive lesson. And they had to speak French too.