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.
"He enjoyed hearing the Manx national anthem!": King greets guests at Government House
His Majesty meets representatives of the Manx community at Garden Party
Crowds gathered in glorious sunshine to see the Monarch
Live blog: King Charles visits the Isle of Man
Updates from the Lord of Mann's first visit to the Island since ascending to the throne
King speaks of Island's 'enduring partnership' with the crown
King Charles III spoke in Tynwald this lunchtime
