This paper focuses on teacher commitment, and in particular teachers who display high levels of commitment throughout their long teaching careers (over 15 years). Graduates from one Teacher Education programme were interviewed on nine occasions via email about their working lives, which spanned from their graduation in 1993 to 2012. Out of the 69 who answered on all nine occasions, seven teachers stating high levels of commitment during all their years in the profession were selected. Factors contributing to their commitment were categorized into the types described by Day et al (2005): personal context, school context, system context and professional factors. For every new generation of teachers, understanding their commitment to increase teacher retention and efficiency is of great value.