In different countries and economics, we can observe the difference in learning students’ achievements depending on their digital competencies. There are some international studies, such as PISA (Program International Student Assessment) and ICILS (International Computer and Information Literacy Study), which allow to evaluate some associative relationship and to make a conclusion about using digital technologies in the learning environment. In 2018 Ukraine participated in PISA for the first time in the Paper-Based Assessment (PBA) format and didn’t participate in ICILS. Now we don't have any national or international studies, which will be able to answer a question about readiness Ukrainian students to Computer-Based Assessment (CBA), only we have some results from PISA 2018. This research presents analyze the PISA 2018 Database and some other re-sults of studies. We studied how digital technologies influence on the student's achievement of main literacy domains. So, in other words, we wanted to evaluate how the digital environment impacts students' readiness for effective implementa-tion in a changing digital world. The results, which were gotten on Ukraine and other countries are useful for the formation of key politics for Ukraine concerning the development of digital competencies of Ukrainian students.