The BoSTEM collaborative, led by Boston After School & Beyond (BASB) and the United Way of Massachusetts Bay and Merrimack Valley (UWMB), aims to increase STEM interest and achievement by Boston middle-school students.  It’s currently seeking two college graduates as AmeriCorps volunteers for a year of service starting in August: Coordinator and Fundraising & Partnerships Coordinator. Living allowance, health coverage, and a stipend or education award are provided.