The study assessed the effectiveness of an online Educational Technology Leadership (ETL) master's program in enhancing graduates' leadership in online learning and technology professional development in K-12 schools. Utilizing a convergent mixed-methods design, data was collected through surveys and electronic portfolios from program graduates, revealing that many graduates successfully implemented web 2.0 tools and advanced technology professional development in their educational environments. Recommendations include expanding electronic portfolio usage for assessing leadership potential and providing ongoing online professional development opportunities to support graduates in their roles.