Police in Ballasalla say people won't be allowed to use school grounds, if they can't do so responsibly.
The warning comes after plant pots at the village's primary school were tipped over and urinated on.
Officers say anyone behaving in an antisocial manner, whether on school grounds or not, over the summer months, will be dealt with promptly, and taken home to parents/ guardians where necessary.
The SNPT is asking parents to pass this message to their children.
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