I just re-read your comment, it does make sense to me now.  Here, the current term is fall-2013, so the previous term would be summer-2013, the next term would be spring-2014, and the future term would be two terms ahead, in summer of 2014.  I think your comment is fine.  I guess I just didn't read carefully enough and by the time I got down to your specs, it hadn't stuck in my brain yet.