DISTINGUISHING CLASS is a TYPE of job classification used in the United States. It is a system of categorizing jobs based on the level of difficulty, responsibility, and skill required to perform them. This system is used to determine the pay scale for each job and to ensure that employees are paid fairly for their work. The distinguishing class is typically divided into four categories: professional, technical, administrative, and clerical. Each category has its own set of qualifications and requirements that must be met in order to be placed in that category.