The upper secondary school system had 337,145 students (46.9% female). They were taught by 13,900 teachers (42.3% female) in 730 schools, of which 240 were private. The tertiary education system had 234,799 students (49.7% female). They were taught by 37,546 teachers (32.8% female) in 367 schools. The police registered a total of 553,421 criminal offences in 2009, including 51 killings and 185 attempted murders. There were 616 cases of rape. In the same year, 94,574 adults (85% of them male, 47.4% of them Swiss citizens) were convicted under criminal law. 57.3% of convictions were for traffic offences. In the same year, 15,064 minors (78.3% of them male, 68.2% of them of Swiss nationality, 76.3% aged between 15 and 18) were convicted. The number of convicted persons is given in the following tables. Each class of crime references the relevant section of the "Strafgesetzbuch" (Criminal Code, abbreviated as StGB in German), or "Betäubungsmittelgesetz" (abbr. BetmG, Narcotics Act), or the "Strassenverkehrsgesetz" (abbr. SVG, Swiss Traffic Regulations).