To ensure its partners have the capacity to implement gender responsive projects, COL introduced an online training programme on gender equality and women's empowerment. This paper reports the methodology and results in measuring the efficacy of this online training at individual and organisational levels. The ability of individuals and organisations to plan and implement transformative actions with a gender perspective require adequate knowledge, skills and a change in attitudes. Given this need, the commonly used Knowledge, Attitude, Skills (KAS) model was used to measure the efficacy of this online training at individual and organisational levels by defining different dimensions of capacities with three learning domains -- Cognitive, Affective, Psychomotor (Bloom's Taxonomy). The baseline and the end line of KAS at the individual level on the six core gender capacities was established for comparison. Two questionnaires were designed to assess the learning achievements of the participants and to measure the efficacy of the training. An analysis of the study registers a clear trend of positive outcomes at the individual level regarding improved knowledge, attitudes and skills on gender equality that could be applied in their work. Furthermore, the paper reports that the organisations demonstrate an enabling environment for more gender equal policies, structures and practices and proposes ways to convert the success of this training by integrating it into the broader gender equality strategy of these organisations.