This qualitative study examines German non-NESTs’ perceptions of their foreign language skills, describing the language change they have observed since entering the profession. The research questions posed were whether the teachers notice differences, positive or negative, in their English after so many years of teaching, and, if so, if these differences affect them in any way. Data stem from semi-structured interviews, site visits, and can-do lists in which teachers were asked about how they learned English and how they evaluate their current levels as teachers and users of the language.