This document provides a learning action cell (LAC) plan for Paulino Dari National High School. The plan involves four LAC sessions over July and August 2019 to train science teachers on assessment and instructional materials preparation focusing on least learned skills in science. The sessions will cover principles of assessment, constructing multiple choice tests, and developing situational instructional materials. The plan details the objectives, participants, activities, budget, and assessment methods for cascading knowledge from a previous training of trainers to teachers through the LAC sessions.