If it's an upright growing one, rather than a weeping one, it could have really nice coloured young stems. It is common practice to coppice (cut back previous year's growth hard) every Spring, to promote this lovely colourful young new growth.
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Do you know what trees they are? Are any of them Elms? If you live in Shoreham, I believe this is part of the Dutch Elm Disease Control Area. You will need to contact the local Council as they will be very protective towards them and even if you got permission from the school, they won't want...