The Forest School Association (FSA) state that
"Forest School training can be a deeply reflective and transformative process, so it is worth identifying a trainer with whom you gel well. It is also important to acknowledge that the quality of the training you receive, the type of qualification you end up with, and the level of ongoing support that is available all vary hugely in the UK. FSA Endorsed Forest School Trainers have all been through a rigorous, three-stage quality assurance process, are able to demonstrate that they meet a variety of high standards, and are committed to reflective, ongoing professional development. You can find a map of FSA Endorsed Forest School Trainers on the FSA website.