Diphtheria - 2 weeks from the onset or until appropriate negative culture tests.
Chicken Pox - 5 days from onset of first crop of vesicles (blisters) or when all blisters are dried and crusted.
Rubella (German Measles) - 4 days from onset of rash.
Rubeola (Regular Measles) - 4 days from onset of rash.
Mumps - 9 days from onset or until subsidence of swelling.
Pertussis (whooping cough) - 3 weeks from the onset or five days from institution of appropriate therapy.
Respiratory streptococcal infections (including Scarlet Fever) - Not less than 10 days from the onset if no medication is prescribed or 24 hours from the institution of appropriate therapy.
Infectious Conjunctivitis (Pink Eye) - Until judged non-infective; that is, without a discharge.
Ringworm - Immediately after therapy is instituted, if body lesions are covered. Neither scalp nor body lesions that are dried need to be covered.
Impetigo Contagiosa - 24 hours from institution of appropriate therapy.
Pediculosis Capitis (Head Lice) - After the first treatment and until judged non-infective by the school nurse. Council Rock supports a no-nit policy - therefore nits must be removed from a student’s hair and cleared by the school nurse before return to school after treatment for pediculosis.
Pediculosis Corpora (Body Lice) - After completion of appropriate treatment and judged non-infective by the school nurse or child's physician.
Scabies - After completion of appropriate therapy and until judged non-infective by the school nurse or child’s physician.
Trachoma - 24 hours from institution of appropriate therapy.
Tuberculosis - Following a minimum of two weeks of adequate chemotherapy and three consecutive sputum smears. In additional, a note from the physician that the child in noncommunicable shall be submitted prior to readmission.
Neisseria meningitidis - Until judged non-infective after a course of rifampin or other drug which is effective against this disease, or otherwise shown to be non-infective.
For more information access:
Centers for Disease Control and Prevention.
Childrens Hospital of Pennsylvania