Traditionally, teaching has been considered a noble profession. However, it has become one of the most physically and intellectually demanding service occupations in the present day. Particularly, teacher stress harms both their health and their students’ learning and performance. Stressors for teachers might vary depending on the type of school administration. Although studies have established the stressors experienced by teachers in public schools, relatively little research has been conducted on the stressors experienced by teachers in private schools. The primary purpose of this study was to determine the most significant stressors affecting teachers in private schools. It employed an explorative qualitative research design using convenience sampling. Twenty-one school teachers (nine males and twelve females, mean age of 32, and average teaching experience of 7.5 years) participated in semi-structured telephone interviews that were recorded with a call recorder. The audio data was transcribed and analysed using thematic analysis, yielding five significant themes: concerns with compensation; poor work environment; demands from parents, students, and management; interpersonal problems at work; and excessive workload. The results revealed the presence of workplace bullying and jealousy in schools, as well as new sources of stress for instructors, such as student evaluations. In addition, the report highlighted how teachers' financial restrictions and administrative responsibilities were exacerbating their stress levels and recommended administrative initiatives, such as psychological interventions for the teachers' well-being.