Obtaining a barber license means that you have completed a minimum of 1,250 hours of instruction in barbering education within a period of at least 9 months or completed 1,250 hours of training. It takes 1,250 to 2,000 hours to be a cosmologist. Police in Germany get 2.5 years of training, and in Finland, police education takes three years to complete. Police in the USA get 750 hours.