Objective Structured Clinical Exam (OSCE) lately considers a method for evaluating the clinical skills for medical-Surgical Nursing Students. Dramatically the uses of a valid & a reliable OSCE checklists as a method for assessing students' clinical competencies in various setting will increase. Thus the Aim that OSCE examiners must have standard checklists for each OSCE station/scenario that nursing evaluators fill it out while observing the student of Adult Medical-Surgical Nursing doing a selected competency. These checklists are standardized to reduce examiners' bias.It is including specific points and general performance points to be assessed. Objectives of the designed scenarios are clear and must be performed within specific time which will save time and effort for both the evaluator and the student. Also adding score for each OSCE checklist strengthen the evaluation with restrict & clear objectivity and minimize evaluators' subjectivity toward the students. Many of Medical-Surgical Evaluators & Students after using/applying OSCE checklists with clear scenarios reported that it was fair and clear; specially after using the (Promo section) which clarify the Whole OSCE process.