This report features syntheses of select Causality: School Libraries and Student Success II (CLASS II) research findings as they relate to the Shared Foundations of Inquire, Include, Collaborate, Curate, Explore, and Engage from the The American Association of School Librarians' (AASL) "National School Library Standards for Learners, School Librarians, and School Libraries" (ED585476). Each synthesis includes a brief topical overview, narrative descriptions of relevant research studied, and recommendations for operationalizing research on the topic. Synthesized studies were drawn from the CLASS II Dataset of Educational Research Studies 1985-2016, available. In addition to future research directions, the syntheses are accompanied by research scaffolds: three Shared Foundation syntheses provide reports of field studies that employed causal designs and three Shared Foundation syntheses outline conjecture maps that illustrate how promising findings might be operationalized in a study. [For the executive summary, see ED624355.]