San Diego MSSELI
San Diego MSSELI is a program developed by the San Diego County Office Of Education, San Diego City Schools, The San Diego Foundation,and the San DiegoScience Alliance. Funding for this initiative comes from the Pfizer Foundation, General Atomics Sciences Education Foundation, the McCarthy Family Foundation, the Wells Fargo Foundation, the Hervey Family Fund at The San Diego Foundation, and the Engel Fund at The San Diego Foundation.

Goals
The goal of MSSELI is to identify lead science teachers from San Diego City and County middle schools to participate in an intensive summer and academic year professional development program focused on science content, leadership strategies, and collaborations with area public and private scientific institutions.The selected MSSELI teachers are encouraged to lead at their schools, districts, and in the region. Throughout the school year, MSSELI Fellows participate in two rounds of Collaborative Lesson Study. 

The integrated plan for MSSELI is built on four interdependent, research-based components: 1) analysis of instructional materials; 2) quality instruction supported by ongoing professional development; 3) responsibility for instructional leadership throughout the system; and 4) collaboration and support from public and private scientific community partners – something that San Diego is well prepared to accomplish.

Collaborative Lesson Study (CLS)
Collaborative Lesson Study is a K-12 professional development model where teams of four teachers collaboratively select, plan, and teach a learning sequence.  Teachers then debrief and reflect upon student learning.  In Collaborative Lesson Study, teachers focus on enhancing student’s conceptual development and understanding of content.  Using evidence collected during the debrief, teachers then refine the lesson and teach it again to a different group of students.  Teachers learn about and implement the idea of conceptual flow within their curriculum.  Participants utilize the 5E Instructional Model and backwards planning while practicing teaching strategies that improve student discourse, and encourage the use of academic language and writing.