Among those high school students of Prykarpattia who started going to school at the age of six and seven, there are no significant differences by sex, place of residence, classes training and areas of Prykarpattia in social and living conditions (type of housing, living space, material conditions, life support systems, hygienic conditions, etc). Pupils who started school at the age of seven, comparing to those who started school at the age of six, have higher levels of functional status of the cardio-vascular system, before lessons there is a predominance of the sympathetic nervous system over the parasympathetic, the growth of inhibitory processes in the brain cortex during the day and the development of fatigue, lower efficiency and success, higher personal anxiety, higher risk of chronic diseases.
Bad habits are very common among high school students in Prykarpattia: one in three of them is a regular tobacco smoker, and one in four students drinks alcohol.
The obtained results testify to the urgent need to develop and implement in practice new effective forms of school education, optimization of educational activities, bringing the educational load in line with the psychophysiological capabilities of students and on the basis of systematic medical and psychological health work to promote the foundations of healthy lifestyle and high health culture.
The research results can be used to optimize the information support of the educational process on hygiene and ecology (section "Hygiene for children and adolescents") in higher educational medical institutions of Ukraine, in practical health care (pediatricians) - to develop preventive and health measures and also in general educational institutions (teachers, psychologists) - to optimize educational activities and psychophysiological adaptation of students to the introduction of innovative teaching methods, as well as taken into account when reforming the educational process in secondary education in Ukraine, the implementation of which will have a positive impact on school health.

hygiene, quality of life, psychophysiological state, pupils of the senior school age, cardiovascular system, autonomic nervous system, central nervous system.

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