The document discusses principles and guidelines for assessment of student learning outcomes under the K to 12 Basic Education Curriculum in the Philippines. It outlines that assessment should be formative, standards-based, and use multiple measures to evaluate student proficiency in knowledge, skills, understanding, and performance. Assessment results will be used to track student progress, promote self-reflection, and determine if students need remediation. Schools will begin implementing a new standards-based assessment and rating system starting with Grades 1 and 7.