This 4-Day OpenSciEd Middle School Curriculum Launch will prepare middle and high school science teachers to launch the curriculum with confidence. Participants will engage in lessons as learners, reflect on instructional practices, and explore unit design, assessments, and supports. Participants will explore a grade-level unit that directly connects to their own classroom. By the end of the launch, teachers will be ready to create classrooms where all students engage in meaningful, phenomenon-driven science learning.