This article discusses the development and validation of a Rational Emotive Education (REE) module for the stress intervention of Malaysian boarding school students. The module comprises four submodules, namely, Acceptance, Feelings, Beliefs, and Disputing Beliefs that have been developed by using the Rational Emotive Behavioral Therapy (REBT) approach. The validation stage which was evaluated by a panel of experts showed that the module's content validity value is 0.92. Meanwhile, the reliability testing performed using a set of questionnaires indicated the reliability coefficient of 0.93 This article demonstrates how a rigorous procedure can be applied to develop and validate an effective stress intervention module before it can be administered in an actual study. The results also demonstrate how the REE module which is based on the REBT approach can be applied by school counselors for the purpose of stress intervention in an educational setting.