Background: This paper aims to identify whether health care staff perceive a 12-week online facilitated, multimodal, person-centred care, dementia education program influences their knowledge, skills, behaviour and practice improvement activities in dementia care. In particular it will examine a dementia education program 'Positive Approach to Care of the Older Person with Dementia' (The Program).Methods: Three clusters of online questions were developed. Participants completed the first cluster at course completion (N = 1455;2013-2016). The second cluster was added into the 2015-2016 exit-surveys to measure clinical practice improvement (CPI) activities implementation (N = 520). Thirdly, all participants were invited to a 2018 follow-up survey (N = 343). The Program was also matched with key factors that are likely to result in effective online dementia education programs. Results: The Program had a 78% completion rate. At course completion (2013-2016, N = 1455), 62% felt that the online forums generated useful discussion and 92% thought their work would support implementing their new knowledge and skills. In 2015-16, participants (N = 520) reported that The Program had influenced their practice in terms of new knowledge (87%), understanding (87%), awareness (88%), and new ideas about delivering dementia care (80%). Almost all (95%) participants indicated they had changed 'an aspect of their own professional practice'. Sixty-three percent had planned to develop a CPI activity. Of those (N = 310), 40% developed a new or improved tool and 21% planned to deliver education or create new resources. The most common CPI activities reported in the 2018 follow-up survey (N = 343) included education (49%) and role modelling of new behaviour (47%). Additionally, 75% indicated their CPI influenced their practice and had influenced patients (53%) and colleagues (53%). Fifty-seven percent reported their projects were sustained for 12 months or more.