Roundabout School is meant to help travelers of State Road 25 in the Lafayette area get some experience before a new roundabout opens along the Hoosier Heartland near I-65 at the end of next month.  Debbie Calder, Crawfordsville District Communications Director said area residents were promised last year that a public meeting would be held to teach people how to drive through a roundabout as those traffic regulators are not as popular downstate.  Calder says they'll have booths, videos and a chance to drive around a roundabout-there will even be activities for the kids to be held tomorrow afternoon at East Tippecanoe River Middle School in Lafayette.