This research was conducted in collaboration with the US Embassy Education Department located in Ankara and the Local Directorate of National Education (DoNE). The study aimed at designing an online in-service training program based on the needs and expectations of K-12 English language teachers; and to identify their perceptions regarding the online in-service-training program to make implications for the design of future online in-service programs. A needs analysis survey was conducted, resulting in an online program which included topic areas, such as use of technology, engagement of students in online classes, effective teaching and assessment of speaking and writing skills, use of drama techniques, professional development, the profile of next generation learners, as well as pedagogical approaches. The focus group meetings with the participant teachers at the end of the program revealed that the teachers in the study benefited from the online program in terms of improving their overall online teaching and assessment skills, contributing to their professional development, and improving their own language proficiency levels.