As is known, the national certificate exams for chemistry and biology subjects were held on January 25–26. Following this, various reactions were expressed by the candidates on social media. In response to this, the Knowledge Assessment Agency announces the following:

The issue of determining the level of knowledge and issuing certificates in general education subjects is regulated by the Resolution of the Cabinet of Ministers of the Republic of Uzbekistan No. 646, dated October 12, 2020, on the introduction of the national test system for evaluating knowledge in general education subjects.

According to paragraph 3 of this Resolution, the test questions for determining the level of knowledge in general education subjects and awarding a state sample certificate must be developed in accordance with state educational standards and the educational curriculum, and these questions are designed to assess the candidates' level of knowledge.

The test assignments are the work of subject experts and are not based on textbooks, but are created based on educational programs. According to pedagogical measurement theory, it is not possible to assess candidates' knowledge level with test tasks that have a low level of difficulty. For this reason, both in Uzbekistan and in developed countries, the level of knowledge is determined at an appropriate standard using test tasks of varying difficulty levels. Furthermore, to ensure standardization and difficulty level compliance, test variants are distributed across the topics covered by the curriculum and the levels of difficulty based on specifications.

Specifically, open tests requiring short answers and extended answers (i.e., written work), as well as closed test tasks, were used in biology and chemistry.

When creating test tasks, the test developers analyze what skills (abilities, competencies) are required to complete these tasks and evaluate how well these skills align with the goals of the test.

Based on international experience and the results of piloting, the test specifications for the national test system in chemistry and biology were revised and approved by the Scientific and Methodological Council of the Knowledge Assessment Agency on December 24, 2024.

The time standards for completing written tasks (80 minutes for three written tasks) were set based on international experience and the results of piloting.

The test results are scientifically analyzed using the Rash model, and based on the analysis, proposals for improving test tasks and ensuring that test variants contain tasks appropriate for each competency level according to the Wright map are developed. These proposals are discussed in the Knowledge Assessment Agency's Scientific and Methodological Council. Based on scientific analyses, test tasks are revised. After each national certificate exam, the test results of the candidates are analyzed, and the results are made available to the candidates on the official website of the Agency.