Clinical education is vital for the preparation of professional nurses who can function competently and independently in a diversity of nursing situations. The present study aimed to assess competency of clinical instructors as perceived by students and clinical instructors themselves at secondary technical nursing school-ZagazigUniversity. To achieve this aim, a descriptive research design was utilized. The setting for this study was at secondary technical nursing school ZagazigUniversity. The study sample consisted of 80 nursing students at 3^rd year and 30 clinical instructors. Data were collected by using students' questionnaire sheet, clinical instructors' questionnaire sheet and researchers' observation checklist. Results of the present study revealed that, all study subjects; instructors and students as well as researchers' observation indicated that teaching competencies were the most mentioned dimension from all dimensions measuring instructors' competency. Concerning grand total competencies, the mean score as perceived by instructors, students and observations showed that instructors over evaluated themselves. Based on study result it was recommended that selection criteria for junior instructors must be followed as having strong basis of clinical and communication skills to become nurse instructor. Newly appointed clinical instructors must spend 1or 2 years in hospitals to acquire experiences in real nursing fields and to become competent on clinical nursing skills. Newly appointed instructors should pass preparatory program to prepare them to be competent. Collaboration between school system and hospital administrator should be ensured to solve training problems.