School break in

Recently, there have been a string of break ins on the North side of Dublin. One of these break-ins included a school. Why would you break into anywhere, but a school? Now that just seems mean to me. To some extent, I understand that usually schools have equipment, but that isn't worth stealing. If you are going after computers, schools usually only have desk tops which are really hard to steal. What else is there to steal in a school? Textbooks? Maybe the thieves just wanted to break in somewhere or have some issue with schools...