It is a beautiful March day: slight breeze, sun’s out, chilly with the feeling that spring is nearly there. I am sitting at the back of a 2nd floor classroom facing a newly-qualified teacher as part of his mentoring support, observing a lesson. His target: pupil engagement. He is at the front of a twitchy, but generally well-behaved Year 5 class standing at the interactive whiteboard. The activity seems engaging - learners are invited to come up to the board and use labels to match parts of trees, comparing these to flowers and plants. Either side of the whiteboard are large windows. The one to his right faces out over the city - a great view. The one to his left overlooks the school field, with more trees than I can count.