sentences:  South River features the STEM magnet program (Science, Technology, Engineering, and Mathematics).It was introduced in the fall of 2009, and students from other Anne Arundel County public high school districts can apply to the magnet program and attend South River if they get accepted by means of a lottery system.South River is one of two high schools in Anne Arundel County featuring the STEM program, the other being North County High School in Glen Burnie.