(a)   Grading. The Department shall establish and implement a system for grading and classifying inspection results for food service establishments using letters to identify and represent an establishment's degree of compliance with the provisions of this Code, the State Sanitary Code and other applicable laws that require such establishments to operate in a sanitary manner so as to protect public health. The letter "A" shall be the grade representing the highest degree of compliance with such laws. Subject to the provisions of this section, the Department shall provide each operating establishment that it inspects with a letter grade card indicating the establishment's inspection grade, except that no letter grade card shall be provided when the Department orders an establishment closed after an inspection. see full law