Massachusetts Association of Science Teachers: Resources for Middle/High School Science
Massachusetts Association of Science Teachers' Resources for Middle/High School Science has a comprehensive list of curriculum, instruction and assessment resources for STEM students and teachers.
Massachusetts Science Education Leadership Association
MSELA is an affiliate of the National Science Education Leadership Association (NSELA) and is an associated group of the National Science Teachers Association (NSTA). MSELA has over 200 members who hold a variety of science education leadership positions including science department heads, lead teachers, science supervisors and coordinators, university faculty, state science education personnel, members of science education research organizations, and providers of informal science education. The website lists many professional development opportunities for STEM teachers.
Website has a comprehensive list of STEM Activities and Programs for Weekends, School Breaks and Summer.
MIT Educational Studies Program
MIT's Educational Studies Program offers several programs annually for students in grades 7-12. A list of programs is listed here.