Robert McGill suffered severe brain injuries after the accident at Kilmarnock Academy last April.
East Ayrshire Council admitted a charge under health and safety legislation.
Kilmarnock Sheriff Court heard that the council has since amended its working and training procedures.
Sheriff Seth Ireland said the level of fine was not to be taken as a value on the life of Mr McGill.
He added: 'The loss of Mr McGill to his family must be regarded as being beyond any monetary figure and be priceless.'"
Source:BBC News
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