 
 <prompt> How Wilson take improve Vollmer reforms, wey make am pass the previous workforce? Given the last question, write a context wey contain the answer. E fit be 1 - 20 sentences. <response>: For United States, August Vollmer bring other reforms, including education requirements for police officers. O.W. Wilson, wey be student of Vollmer, help reduce corruption and introduce professionalism for Wichita, Kansas, and later for Chicago Police Department. Strategies wey O.W. Wilson use include rotating officers from community to community to reduce their vulnerability to corruption, establishing of a non-partisan police board to help govern the police force, a strict merit system for promotions within the department, and an aggressive recruiting drive with higher police salaries to attract professionally qualified officers. During the professionalism era of policing, law enforcement agencies focus on dealing with felonies and other serious crime, instead of broader focus on crime prevention. 