This report contains summaries of the results from the third administration of the fourth and sixth grade science and social studies portions of the Delaware Student Testing Program (DSTP). These results are part of a long-term effort to gather data on the educational progress of Delaware students and to use the data to inform decisions about instruction. Data are reported as Standards-Based Scores (SBSs) and Performance Levels (PLs). The SBSs measure student progress toward Delaware standards in each content areas. The SBSs in Science and Social Studies come from items developed in Delaware. PLs tell how students are performing relative to the state's content standards. Delaware has five performance levels. Like the writing portion of the DSTP, there are no national percentile rankings for the science and social studies tests because these were developed by Delaware educators and are not administered nationally. To determine how well educators are meeting the needs of all learners, the DSTP data are disaggregated by gender, race/ethnicity, free/reduced price meal eligibility, and Title I, disability, English proficiency, and migrant status. This gives a picture of how various subpopulations are performing in relation to the majority. Data are provided for student participation in the tests, with information on exemptions and testing accommodations. Five appendixes contain district and school results, disaggregated results tables, and tables of participation by schools and districts. (SLD)