This is a page from a local Austin, TX newspaper with small ads for several different places all under one heading. The edges are cut off because the ad was a little bit too large for the scanner, but all of the words and all of the participating ads can be seen. Only the large blue border that surrounded the entire thing was cut off.

I totally understand why this kind of group ad page is done. It allows the companies to ally themselves with a cause the community cares about, thus fostering goodwill, and makes the overall ad-buy for each company cheaper. That all makes sense.
Usually, though, the businesses listed tend to be at least somewhat targeted to the people who you would most expect to care about the fact that the business supports the cause. Thus, for schools you see things like after school activities (karate classes), academic organizations (tutors, private schools), back-to-school sales on clothing and school supplies, and pediatricians (the doctors who give the required check-ups and vaccines for kids to attend school). All those are present here.
The gun store ad right in the middle? That one has me stumped. I was under the impression that guns weren’t allowed in or even too terribly near schools. Of course, maybe Texas has different laws than I’m used to. But still… guns and schools don’t seem to me to mix.