well i get involved in it in  so many different ways erm this is a difficult one, but one of the things that happens is that a number of teachers, both from the area and elsewhere, erm do advanced courses at the university and as part of these courses we have a unit on evaluation, and for this they will choose some area of their school work which they and their colleagues — and i emphasise that this is something they do have to involve  their colleagues back at school in very much — erm feel it would be useful to look at and then they try and discuss with their colleagues what aspects of it are important and significant and what ought to be seen, and they bring this discussion back and we all discuss together  there'll be different teachers working on different problems  the different ways in which they could approach this problem and how they might most usefully be able to do it and at the end of the exercise they will have found out quite a lot about this particular area of teaching and very often we find that the people they've consulted have themselves got quite interested in it and begun to realize that it's not being done in a way that's there to threaten them, they're not sending a report to the headmaster or the chief education officer or anything like that — it's for the benefit of the people doing the work themselves.