Proprietary Education Interagency Oversight Coordination Improvement Act This bill requires certain actions to increase federal oversight of proprietary (i.e., for-profit) institutions of higher education (IHEs). Specifically, the bill establishes the Proprietary Education Interagency Oversight Coordination Committee and sets forth its duties and membership. The bill also directs the Department of Education (ED) to collect and track student complaints regarding the services or activities of any proprietary IHE that is eligible for federal education assistance. Further, ED must publish a warning list for parents and students that is comprised of proprietary IHEs that have engaged in certain activities, including those that have been sued for financial relief or have pending claims for borrower relief discharge.