<p>Email would be fine. Facebook would be fine too, really, though I see that you don’t really want to add them.</p>
<p>I talk to a couple of HS teachers still. I guess I am still only a second-semester freshman, so I’m not that far removed, but I do keep in touch. I’ve kept in touch with my HS Latin teacher and my HS band teacher. I also have my senior-year AP English teacher and my sophomore-year AP European History teachers added on Facebook.</p>