The Chapter 1 Evaluation and Reporting System (CHIERS) is an annually updated system for gathering and reporting student information regarding the Education Consolidation and Improvement Act Chapter 1 program in the Philadelphia (Pennsylvania) School District. Data elements included in the CHIERS are school location, achievement test scores, and Chapter 1 services received. This report covers the 1987-88 school year. Sources of information included the Pupil Directory Information File and the City-Wide Testing Program computer files. Data confirmation lists, distributed to project staff, provided information on which students are being served. Additional data elements were collected via the Data Confirmation Lists to assess factors such as attendance, informal reading inventory scores, and project-specific mathematics test results. Focus was on reading and mathematics achievement and factors that affect these indices. Across the projects that participated in CHIERS, 124,467 services were provided, and about 59,000 individuals were served in reading and mathematics projects. It appears that those projects that provided very intensive services tended to be more effective than those that provided less concentrated services. Prior CHIERS updates indicated that there were no significant differences across projects. Data are presented via five tables and four graphs. (TJH)