In 1964 German Petrovich graduated from the directing department of the theatrical faculty of the University of the Arts of the Ministry of Culture of the RSFSR, in 1965 - the philological faculty of the Ussuriysk State Pedagogical Institute, the department of the Russian language, literature and the English language.
German Petrovich began his career as a director of the National Youth Theatre in 1961, where he performed 15 plays for 8 years. After graduation he worked as a teacher, deputy chairman of the Central Council of the All-Union Pioneer Organization named after V.I. Lenin (1969- 1985), the head of the Main Directorate of the International Children's Center "Artek" (1985-1987). From 1987 to 1991 German Petrovich was pro-rector, professor of the psychology department of the Institute of Youth.
In 1994 German Petrovich was elected a full member of the International Academy of Psychological Sciences, and in 1995 - a full member of the International Academy of Acmeology and Political Psychology.