The data that's available isn't the school, it's student data! The school left the students "cars unlocked" and no one holds them accountable. They just say that people shouldn't steal cars.
Yes, someone technically minded with the right tools and access can break in. But that’s less than 5% of the population, very similar to the percentage who could easily pick even a complicated lock, but Of cause near 90% will be able to take an ax to a door or kick in a window.
The issue is organisations being reckless with our data and then blaming hackers when they lose it. It should be common sense that if you have sensitive information then it needs an appropriate level of security but someone companies have convinced everyone it's not their fault