Software quality assurance and testing is a vital phase in the software development lifecycle, oftentimes requiring a significant portion of the overall development budget. Providing authentic, real-world software quality assurance and testing experiences within the context of a Computer Science or Software Engineering curriculum is challenging. Based on prior experience leveraging Free and Open Source Software (FOSS) as an instructional medium for teaching Software Engineering concepts, this paper describes five increasingly involved learning interventions that utilize FOSS in a software testing course to provide students real-world hands-on software testing knowledge and experience. The proposed approach will be piloted and assessed in software testing courses at the undergraduate and graduate level.