Hi Bob, I think that badges are really helpful to build a brand and get renowned in your niche, as more alumni use them the more exposure you'll achieve, however I discourage the usage of this kind of backlinks in your seo linkbuilding strategy since they're not editorially made, and since the link is embedded, it doesn't reflect an user real willing to link to a website. In this video from Matt cutts you can see what I am speaking about. IMO it's still fine to use this kind of links but only if you do the following:
- put a nofollow in it
- don't use rich anchor texts but only your brand name
In this way you'll be sure that no penalty may affect you in the future. Just a general guideline always try to achieve editorially made links. Hope this helps!