The goal of the research is to explore the peculiarities of self-assessment of adolescents’ learning achievements in Vilnius general education schools. Research methods: analysis of scientific literature and documents, empirical research, statistical analysis of the research data. The research was carried out in 2014-2015, 272 6^th-9^th grades students of Vilnius general education schools and technology teachers who taught them were surveyed. The analysis of the research data demonstrated that self-assessing own learning achievements an adolescent develops own technological abilities, notices encountered learning difficulties and foresees guidelines for further improvement. Oral, written and graphic methods of self-assessment are periodically applied during lessons of technologies. In the process of self-assessment both teachers and learners encounter the problem of discrepancy between the self-assessment and assessment, which, to big extent, is influenced by specifics of adolescents’ psycho-social development and the attitude of teachers of technologies towards a learner.

Keywords: adolescent learning achievements; self-assessment; lessons of technologies; frequency and methods of self-assessment; criteria of self-assessment.