This practical advice for the School Developer, written from the point of view of a Gates Foundation grant-making team member, gives a significant shout-out to blended learning as a design principle in choosing educational technology, online content, and school models. Specifically, Alvo is called out as a provider for this design philosophy who “facilitate[s] design thinking,” which Alvo has championed from their inception in 2009. As Part I in a series, the blog asserts that founding principles like the personalized learning blended instruction affords – not the technology or the model itself – should drive the developers’ decisions in designing their schools.