Tasmania Police say that about 4pm on Saturday, a number of offenders gained entry to the school library on Agnes Street.

Police say that once inside, the offenders caused extensive damage to books, computers, a photocopier and other equipment and furniture items.

The value of the damage caused is estimated to be in the vicinity of $10,000.

Anyone with information relating to the incident is asked to contact George Town Police Station on 6382 4040 or Crimestoppers on 1800 333 000.