The 4th International Summer School on Neutrino Physics (INSS2012), co-hosted by Virginia Tech and Fermilab, will take place at Virginia Tech's Center for Neutrino Physics in Blacksburg, Virginia, USA from July 10th to July 21st, 2012. The goal of this series is to train the next generation of neutrino physicists, and the curriculum covers many topics: introductions to both the Standard Model and oscillation phenomenology, accelerator and reactor neutrinos, neutrino cross sections, and neutrinos in cosmology, just to name a few. The target audience consists of graduate students and recent post-docs in both theory and experiment. We aim to cover the full breadth of neutrino physics over all energy scales. The school will comprise formal lectures as well as informal tutorial sessions and opportunities for students to present their own work.