although hollingworth began teaching, she continued to devote at least one day out of the week to work at bellevue hospital. there, she helped establish the classification clinic for adolescents, as well as, the american association of clinical psychologist. she was involved in developing the ethical guidelines for clinical psychologist and in promoting universal standards for training in clinical psychology. along with her teaching duties she also trained clinical psychologists and was the principal of the school of exceptional children at bellevue.