This study used a data base generated by a statewide job task analysis of police patrol officers in a Midwestern State. The research also questioned 196 supervisors of patrol officers regarding the criticality of tasks performed by patrol officers. Supervisors rated the consequences of improper task performance for each of the 98 tasks, using a seven-point Likert scale ranging from 'minimal' to 'disastrous.' There was no significant variation in the perceived criticality of patrol task performance in relation to agency size, but there was variation according to supervisors' occupational experience. Experienced supervisors tended to rate improper task performance as generally less critical than did the less experienced supervisors. This could produce varying evaluations of patrol officer performance among supervisors. Training in task performance evaluation in accordance with departmental policy can help reduce disparities in performance evaluation among supervisors. 3 data tables and 22 references.