This paper reports on research conducted to evaluate the effectiveness of the Certification Modular Model 2.0 (CMM 2.0) offered by the Teacher Quality Institute of the Australian Capital Territory. The research evaluated the extent to which the CMM 2.0 was attractive, sustainable and developmental. The data was collected via two surveys conducted with, teachers who were prospective applicants to the CMM 2.0 and current and former certification participants. A case study method was used to conduct this research. Coding and systematic analysis were applied to the data by using the three selected categories attractive, developmental and sustainable. Most participants appreciated the developmental nature of the Modular Model and saw this approach as affording them with opportunities to gain professional recognition. This study contributes to knowledge about modular approaches to teacher certification and has potential to have influence on certification design and implementation in the Australian context and internationally.