Banks vs. schools are apples and oranges, I think. A shooting on campus should probably be taken more seriously since school shootings historically are more deadly than hold-up's at banks.
For example, how many times in the past decade has a bank robber gone into a bank and shot 10, 20, 30 people to death? It just doesn't happen.
With schools, on the other hand, we have seen exactly that happen. And not just on Monday either. Historically speaking.
Hence the term "school massacre"; I've never seen the term "bank massacre."
Also, look at the differences in motives here.
A bank robber wants money, not the death of other people, so once he gets his money, he's happy and off and running, and then into hiding, because he wants to continue LIVING and eventually spend that money.
In other words, he's achieved what he sought out to achieve. He's satisfied after the robbery.
School shooters, on the other hand, don't want money and they don't want to live. They want everyone to die. This is why school shootings are tenfold more important in how they're handled and responded to.
Clearly.