There's a shock.
The average US police department requires fewer hours of training than what it takes to become a barber or a plumber
That's a misleading statistic. 89% of police officers have some form of college degree:
A national survey of 958 police agencies, published in 2017, found that 30.2 percent of police officers had four-year college degrees, 51.8 percent had two-year degrees, and 5.4 percent had graduate degrees.
Most of the police officers take courses in criminal justice, psychology, etc. before they even begin specific training to be a police officer in a particular community.