education. Professional qualification Historical system ranked students by professional qualification (stručna sprema). Those who graduated only from primary school were qualified as unqualified workers (nekvalifikovani radnik), while those who graduated gymnasium were semi-qualified workers (polukvalifikovani radnik). Those with a professional high school degree had secondary professional qualification (srednja stručna sprema), those with a college ('higher school') degree had higher professional qualification (viša stručna sprema), while those with a university degree had high professional degree (visoka stručna sprema). Degrees of professionality Other than professional qualification ranking that indicated workers' ability to work, there also were degrees of professionality (stepen stručne spreme). Those who graduated gymnasiums had the IV degree (reserved for four-year professional schools). The degrees were: I degree - Lower grades of primary school (4 years for degree; 4 years in total) II degree - Higher grades of primary school (4 years for degree; 8 years in total) III degree - Three-year professional school (3 years for degree; 11 years in total) IV degree - Four-year professional school (4 years for degree; 12 years in total) V degree - Four-year professional school (4 years for degree; 12 years in total) VI degree - College or Higher School (3 years for degree; 15 years in total) VII1 degree - University ( Visoko obrazovanje) (4-5 years for degree; 16-17 years in total) VII2 degree - Magistracy (2 years for degree; 19 years in total) VIII degree - Doctorate/PhD (1 year for degree; 20 years in total) Compulsory Education School Organization Students are organized into classes (odeljenje) of at least 5 for preschools and at least 15 for primary and secondary schools. In primary school, a class usually consists of 15-30 students. The students belonging to the class are randomly chosen a few weeks before they start attending the 1st grade. Class structure remains unchanged for the next eight years (with a couple of exceptions). Most primary and high schools have their Student council (đački savet/parlament) and Peer Team (vršnjački tim). Student councils propose events and improvements and give their opinion about particular subjects to school principals, while Peer Teams deal with students' problems (helping lower ability students learn or helping someone integrate into peer groups) with the help of professional psychologist. In schools without Peer teams, its actions are all on the psychologist. Parents are organized into Parent councils (savet roditelja). Parent councils propose excursions, watch over actions involving students' money and