This report contains Portland Achievement Levels Tests results for 61 elementary schools, 18 middle schools, and one special program school in the Portland School District for the 1986-87 school year. Twelve different grade-level configurations are represented, from pre-kindergarten to grade 12. Tests are designed to be administered in accordance with the level of performance of each student, meaning that different students in the same grade take tests for different levels of ability. The various levels produce scores related to a common scale; these are reported as Portland Standard Scores and Rasch Unit Scores--measures of relative and absolute achievement, respectively. Testing results are included with descriptive data about the school, students, and staff. These data include enrollment and attendance figures, details about the faculty, and information about numbers of students in special programs. Data for a total of 35,585 students are reported in this summary. Tests were given in reading, mathematics, and language usage. Data for each school are listed separately, in table and graph forms, to compare scores from fall 1986 to spring 1987. (SLD)