This document discusses competency-based assessment. It defines assessment as collecting information using instruments, analyzing the information, and making judgments. Assessment informs students, parents, teachers and society. There are three types of assessment: initial assessment to understand students' starting points, formative assessment to guide the learning process, and summative assessment to evaluate learning outcomes. Effective assessment is valid, reliable, minimizes language bias, and engages and motivates students. The document then reviews a brief history of assessment, moving from a knowledge-based approach centered on exams, to a competency-based approach using portfolios and evaluating higher-order skills.