This document outlines key concepts in language assessment including evaluation, assessment, testing, informal assessment, formal assessment, self-assessment, formative and summative assessment, and different types of formal language tests. It discusses three generations of tests and contrasts their characteristics. Key distinctions discussed include competence vs performance, usage vs use, direct vs indirect assessment, discrete point vs integrative assessment, and objective vs subjective assessment. The document also covers desirable test characteristics like reliability, validity, utility, discrimination and practicality.