Sorry frank - need rather more information. I've done a couple of tree RAs in the past, but found it essential to include a competent arboralist and also a Tree Surgeon in the RA team. One thing that I did learn is the range of topics for the RA is very long;- core questions will include:- The location generally, likely weather conditions, type of ground, type of tree, maturity of tree, adjacent trees/shrubs, any animals using the land [cloven hooves cause have considerable impact on the ability of the ground to shed water readily], public [generally accessible or via Rights of Way etc] or controlled access, adjacent buildings [for potential damage but also to identify likelihood of disturbance to the tree[s], volume and type of adjacent traffic. I would now also include impact of weather conditions - ie flood or drought; and also what impact any vegetation and tree removal might have in relation to landslip, mudslip. Also, any adjacent contstruction that could affect the stability of the tree[s] in question. Frank Hallett That should be enough to get you going! Frank Hallett

Perhaps a condition survey that you could source from the local council may be starting point. This should include: type of tree, if it has any decay, its age and size, position in realtion to structures or play areas. Like Frank H stated a trained aboriculturalist is invaluable

....and you might find the guidance here helpful. http://vscg.co.uk/good-p...d/tree-safety-management

I have experience here but note that this is a very complicated area and nobody becomes competent to evaluate trees without lots and lots of experience and academic knowledge so I advise that you get an arbourist or similar involved or appropriate practitioner along with taking note of the advice already given because if a tree was to fail and a child hurt it would be you that the authorities and your insurers would question Local councils have [noting the recent cuts!] such people noting that many non-maintained schools e.g. academies and the like or even maintained schools who hold their own budgets do not buy into their services hence you have been asked to undertake the work Best of luck