The article represents an approach to studying the personal self-determination (analogous to the notion of identity) in the senior school age. Repertoire formats technique was applied in the study. The values-and-time structure of Ego (continuity of the past, the present and the future, and their congruency to ideal Ego) and its special structure (correlation of Ego to other Egos) were taken as operational equivalents of the notion. The content dynamics of meaning concepts of those examined in regard to the discovered typical patterns of values-and-time structure of Ego. Basing of systems analysis of these variables some criteria of productivity of the process of personal self-determination and its versions were identified.