The figures, obtained by the party through freedom of information legislation, revealed that £690,280 has been spent repairing malicious damage in secondary, primary and special schools in 2022/23.
Stephen Kerr, the party’s education spokesman, accused the Scottish Government of “inexcusable indifference” towards the state of schools amid the “staggering” data.
In the 2021/22 school year, £1,167,683 was spend on vandalism repairs, taking the total to £4,961,189 over the last five years.
However, the total figure is thought to be higher as 10 of Scotland’s 32 local authorities did not respond to the request for data.
Mr Kerr said: “It’s disgraceful that already scarce resources are having to be spent on repairing damage to schools caused by mindless vandals.