Just curious as to whether this is the norm or not. I've accompanied a few KS3 school trips (G&T enrichment) into London by train. On the way back there are usually a few students who want to get a different train because it's more convenient for where they live, so the teacher dismisses them at the (busy central London) station. The first time there seemed to be a process of students texting their parents for permission, but as it's become "normalised" students now just tell the teacher they have permission and the teacher takes their word for it. These are relatively bright, "responsible" kids, but I guess I'm a bit concerned in case something goes wrong - someone gets on the wrong train, or there's an "incident". But is it fairly normal at KS3?