Highlights ■ Training markedly improves theoretical knowledge and performance in cardiopulmonary resuscitation and foreign body airway obstruction management. ■ Significant knowledge and skills, particularly in the Heimlich maneuver, remain after 6 months. ■ The objective structured clinical examination is a practical  and reliable method to evaluate first-aid skills in schools. ABSTRACT Objective: To assess the knowledge and performance of high school students in cardiopulmonary resuscitation and foreign body airway obstruction management using an objective structured clinical examination. Methods: An interventional […]