Frank, a startup best known for helping college students secure and manage financial aid, is expanding into a new part of the edtech world. Namely, finding and taking online classes, with the company helping students deploy their financial aid money to open digital slots at more than 100 colleges. As a company, Frank straddles the ground between consumer fintech, which helps regular people better manage their money, and edtech, the application of tech to the venerable business of learning. TechCrunch covered the company’s 2017-era Series A, and recently discussed the…