In all educational settings, teachers are likely to encounter learners with different emotional and cognitive characteristics, particularly learners who are demotivated or disengaged and as a result misbehave in the classroom. Learned helplessness (LH) is associated with such emotional and motivational deficits in academic performance. This study investigated the feelings of LH experienced by secondary students in the public middle schools of Iran. To this end, we administered the Learned Helplessness Scale (LHS) and the Student Behavior Checklist (SBC) to 154 students in a public middle school in Tehran. We identified 58 students (aged 13-15 years) with school-related LH and randomly assigned them to the control and experimental groups. These students participated in a motivational intervention program based on Dörnyei's motivational strategies (MSs) with social reinforcement integrated into the English language classroom to improve their academic performance and alleviate feelings of helplessness. The results revealed positive effects of the program on the participants' academic achievement and experienced LH. The delayed posttests also showed acceptable durability effects of the program six months after the intervention. It was found that the teacher and his practices in the classroom could be an effective means of alleviating LH in public schools. Further implications are discussed.