The report discusses the actuality of the evaluation category research and the main problems that are of special interest to linguists. The paper talks about the different views in linguistics that are related to assessment systems, assessment categories and assessment norms; It represents various terms denoting the category of evaluation and all related concepts of evaluation that are widely used in linguistics. In the work, several approaches that are sharply defined in the process of studying evaluation categories are distinguished. Among them the most defined ones are lexical-grammatical, discursive and communicative; in the paper assessment types and underlying characteristics are also characterized.