An 18-year-old Two Rivers man was sent to the hospital after his car rear-ended a stopped school bus in the town of Carlton in Kewaunee County.   According to the Kewaunee County Sheriff’s Department, a little after 3 p.m. Tuesday a Kewaunee School District bus with about 30 students aboard was stopped at a residence on Highway 42  South of Townline Road in the township of Carlton.  A 2009 Chevrolet Impala driven by the 18-year-old was traveling Southbound on the highway and ran into the back of the school bus.  The teen driver was injured and transported to the hospital, while the occupants of the school bus only reported minor injuries, and none required medical treatment.  The accident is still under investigation by Kewaunee County Sheriff’s Department with the help of Wisconsin State Patrol.  Highway 42 was closed for about three hours after the accident.  Kewaunee Rescue, Carlton Fire, Carlton first responders, Kewaunee County Highway Department, State Patrol, and Kewaunee County Sheriff’s Department all responded to the scene.