This study explored the experiences of public school teachers teaching subjects outside their specialization. It aimed to identify their challenges, adaptation strategies, and professional growth while examining how school support influences teaching quality. A qualitative phenomenological design was used. Fifteen Grade 6 public school teachers participated through in-depth interviews and a focus group discussion. Data were analyzed using thematic analysis to identify key patterns and shared meanings. Teaching outside specialization brings both challenges and growth. Teachers face difficulties in content mastery, lesson preparation, assessment design, and instructional confidence, which affect clarity of lessons and student understanding. Despite this, teachers adapt through continuous learning, peer collaboration, resourcefulness, and flexible learner-centered strategies. These experiences strengthen problem-solving, time management, and professional confidence over time. Results also show that limited training, insufficient materials, and staffing gaps continue to challenge teachers assigned outside their field. With proper support, teachers can improve performance and maintain instructional quality. Schools should provide targeted training, mentoring, and adequate resources, and ensure appropriate subject alignment to enhance teaching effectiveness and learner outcomes. Furthermore, structured professional development programs and collaborative learning communities can help teachers share practices, deepen content knowledge, and sustain motivation. Continuous monitoring and feedback from school leaders can guide improvement and strengthen accountability. Overall, effective out-of-field teaching depends not only on subject expertise but also on teachers’ willingness to learn, adapt, and reflect, supported by enabling school conditions and clear policies frameworks.