The Coalition of Oregon School Administrators (COSA) serves and represents over 3,000 school administrators, managers and executives. We develop and support educational leaders to ensure student success. COSA is a confidential, peer-led recovery fellowship for people whose lives have been affected by compulsive sexual behavior. Horizon View provides COSA remote access for employees to their COSA applications and Virtual Desktops. COSA is a global consortium of partners dedicated to accelerating agricultural sustainability through robust monitoring and evaluation. Here's your one-stop for standards and resources to help you in your tasks. Learn more about this website. We’re piloting a new, easy to use website focused on information and services to meet community needs. Quickly find news, events, and request 311 services. COSA is the national oncology community bringing together multidisciplinary health professionals across all cancers to advance care and improve outcomes.