Project Overview: The TRAILS 2.0 SEI will expand, scale, and innovate a tested model of integrative STEM instruction and teacher professional development to enhance rural students’ STEM learning while generating interest in STEM careers. To reach underserved and underrepresented rural populations, the TRAILS 2.0 team will work with up to 90 secondary STEM teachers to impact over 10,000 students and expand to schools in: Delmarva Peninsula (Delaware, Maryland, and Virginia area), Southeastern Colorado and Northern New Mexico, and native Hawaiian-serving schools.