The Smarter Balanced Assessment Consortium has built a comprehensive learning and assessment system in English Language Arts/Literacy (ELA/L) and mathematics, the components of which work together toward the goal that all students leave high school prepared for postsecondary success in college or career through increased student learning and improved teaching. The comprehensive assessment system includes summative and interim assessments; a digital library of formative tools, processes, and practices; and a suite of open-source applications. The purpose of this report is to summarize the work done to build the assessment system for use beginning with the 2014-2015 school year. The first chapter of this report discusses the principles underlying the Consortium's assessment system. Chapter 2 articulates the purposes of the summative and interim assessments and then discusses the evidence that support those uses. The last portion of this chapter discusses the digital library of formative tools. Chapter 3 discusses the work that was done to create test questions that measured the intended construct and that were accessible to all students. This chapter also discusses the Consortium's open-source assessment delivery and reporting system. Chapter 4 discusses the population that took the spring 2014 field test and the expected population who took the spring 2015 operational test. Chapter 5 summarizes the Consortium's outreach and communication efforts. Chapter 6 discusses sustaining the work of the Consortium now that its first operational use during the 2014-2015 school year is past. The Consortium is committed to allowing flexibility among members. To support this, Chapter 7 discusses the Consortium's technology standards for items and tasks as well as our Implementation Readiness Package (IRP). The Consortium is committed to protecting the privacy, security, and confidentiality of student data. The final chapter shares the Consortium's policies on data privacy and data security. The List of the Consortium's RFPs and Contracted Vendors is appended.