No
A sherrif is not a rank, it is an officer of the court. My father is a sergeant in the police, who has worked and managed one of the most sophisticated policing operations in NSW, with praise from superiors, from establishing one of the Best Transit Police units for the Induction Royal Easter Show at Hombush when it first was held there, through to Internal Affiars.
Sherrifs don't need uni degree's they are counted as a Public Service level 3-4 I think, which is reletively low. What happened was we had Sheriffs before police, then after a police was set up, America was independent from Britain, so the change did not follow through to a great extent.