This "Fourth Annual Report Card" marks a new chapter for the Boston Opportunity Agenda. For the first time, the Boston Opportunity Agenda is reporting student outcomes across Boston Public Schools and Catholic and charter schools. This provides a comprehensive baseline view of the education pipeline for the city's K-12 students. The report card is the beginning of a longer conversation about common metrics and goals across all three systems and offers an initial snapshot of how Boston's learners are doing across the multiple education sectors that serve them and can serve as a blueprint for work moving forward. This report card is also the final update on the first four goals of Boston Opportunity Agenda's ambitious 5-year plan: that all students are ready for kindergarten, are reading proficiently by 3rd grade, have access to 8th-grade algebra courses, and are proficient on the 10th-grade Massachusetts Comprehensive Assessment System (MCAS). [The Boston Indicators Project and the Boston Public Schools Department of Research, Assessment and Evaluation assisted in analyzing and reporting on the metrics in this report. For the third Annual Report Card, see ED596507.]