This classroom assessment tool for grades 4-6 offers teachers a method to quickly identify the needs of migrant, language-different, and mobile students in language arts, mathematics, and science in relation to national content standards. The Snapshot System asks the student to perform a series of tasks that are keyed to content standards and organized progressively from fourth- through sixth-grade level. The results give teachers a general idea of what the student knows in each content area. Tasks are in both English and Spanish. Section 1 gives an overview of the system, including standards, benchmarks, contents, and structure; administering, using, and scoring; how the system was developed; a 16-item bibliography; an appendix on Spanish pronunciation; and an appendix on general directions for teachers. Section 2 charts specific tasks and content standards in language arts, mathematics, and science. The tasks and standards are referenced to national standards and benchmarks. Sections 3-5 give detailed instructions and test items for 10 language arts assessment tasks, 14 mathematics assessment tasks, and 15 science assessment tasks. Section 6 contains student proficiency checklists in language arts, mathematics, and science. Manipulatives included are two cardboard sheets of punch-out attribute blocks of different shapes and colors. (SAS)