A National diagnostic test is one of the diagnostics tools used to ascertain students’ basic skills acquisition on finishing a certain level of education according to the national education standards and the subject curriculum requirements. In order to get valid and reliable data the participation of educational institutions from all regions of the country and all types of educational institutions as well is necessary. The rapid development of information technology (IT) contributes to conducting and assessing national diagnostic tests online at the same time increasing its role in the modern education system. Is this process worth implementation in an era when computer and e-environment has become a familiar source of information for many young people and should national diagnostic tests be conducted only in an e-environment? The aim to examine whether the traditional paper-based tests are applicable in a different environment (in an e-environment Online/Computer-based test), whilst maintaining its theoretical and technical specific features and is to focus on the sustainable development of activities in order to improve the quality of education in STEM (Science, Technology, Engineering and Mathematics) subjects, which includes using innovative methods in the Latvian educational context.