The Virtual Learning Lab (VLL) is a research collaboration exploring the potential for precision education with Virtual Learning Environments (VLEs) to revolutionize teaching and learning. The team approaches programming for VLEs in new and innovative ways, with the ultimate goal of improving achievement for all students. Through a partnership with the online learning platform Math Nation, the VLL is developing strategies to personalize online learning. This is accomplished by mining the records of over 200,000 students who have used the platform and learning from the behaviors of successful learners to formulate effective and engaging paths for new users. Iteration after iteration is leading this team closer and closer to a highly impactful solution.