California has identified two course models for the Next Generation Science Standards in grades 6-8, the CA NGSS Integrated Learning Progression Model and an alternative Discipline Specific Model.
The Integrated Learning Progression Model (DOC) document provides middle school educators the rationale for the Integrated Learning Progression Course arrangement of standards developed by the California Science Expert Panel.
Links to grade level standards:
Grade Six - Preferred Integrated Course Model
Grade Seven - Preferred Integrated Course Model
Grade Eight - Preferred Integrated Course Model