Once upon a time I could have said, have the school buy Apple laptops. Seems that's no longer a deterrent. Oh, I know, how about dumb laptops? They need to be connected to the school's terminal server to provide any applications. Not sure there is such a thing and they are likely more expensive but it would likely make it less interesting for people to steal and also never be obsolete.
Just about every week we see another major security issue caused by a problem with Flash. Adobe isn't serious about security and doesn't know what to do to fix their products. For example, Javascript should be off by default in Reader, but it isn't. Last quarter something like 80% of serious attacks were through holes in Adobe products and the latest issue is with Downloader. Why allow a company and set of products that have shown themselves to be insecure onto the next generation of device where hackers can steal more personal data, run up changers and the like. Apple is trying to make our mobile devices more reliable and more secure than our PCs. It is time to dump Flash.
Work expands to fill the time available. -- Cyril Northcote Parkinson, "The Economist", 1955