Do trees also need to be inventoried? Although it is logical since they are on the school's balance sheet and their illegal cutting is grounds for prosecution. Try to contact Evans West Valley Spray https://evanswestvalleyspray.com/what-we-do/arborist-reports/ , they work not only with individual clients but also with various institutions and companies. In addition to a detailed tree health report, the arborists will also prepare the appropriate city documentation you will need to keep track of the trees on the school grounds.