Hi Kelly,
This might be a question you should put out there to the tribe! (I'm retired and try to read only non-educational books whenever and whereever I can!) I guess it depends where your TLs are and where you want them to be....
A couple of good titles come to mind:
BUT I think more can be gained from Twitter and blog posts, pinboards, webinars, videos and online articles. I love Jennifer LaGarde's webinar on using data (described by Joyce Valenza here) and posts by Valenza, LaGarde, Johnson, Shannon Miller, Nikki Robinson, and so many more including non-librarians: Justin Tarte, Krissy Venosdale, Pernille RIpp, Todd Neslony...OH SO MANY!!!
(Why not curate some of the best things with Themeefy or Lesson Paths or Blendspace (or other curation tool: http://webtools4u2use.wikispaces.com/Curation+Tools. Or let them work in teams on a topic they choose and they curate themselves and share.
Just a thought...
As a retiree, I'm a little out of the loop, but I'll bet you'd get great answers from your fellow #tlchat-ers! Better than mine? Probably!
Good luck. As Jennifer said in her ISTE keynote, "Change my be hard, but unemployment is harder. We need to be agents of change...NOW!"
If they haven't seen that keynote, it would make a great kick-off for the year. (Although you're in NC, so you've probably all had the privilege of hearing her in person!) I wasn't there, but I've watched it twice: http://youtu.be/8FlapfzevoY?t=7m4s