In laboratory classes on invertebrate zoology for first-year students of the Biology and Ecology Faculty of the Y. Kupala Grodno State University current control of knowledge in a test form is carried out. The number of questions in the task is 11–20, 5– 10 minutes for execution are allotted, one, two or more correct answers are selected from the proposed options. For each correct answer, a point is set; for erroneous answers, penalty points are entered. The regular use of test control increased the level of students' assimilation of educational material and optimized the current control of knowledge.