Launched in June 2016, the Smithsonian Learning Lab (SLL) provides access to the digital resources from across the Smithsonian's 19 museums, 9 major research centers, and the National Zoo, to be used as real-world learning experiences. It is designed to aid students in building lasting knowledge and critical skills that take learners from simply finding resources to thoughtful selection, examination, organization, and creation of new resources. The goal of these Student Testing experiences, as a piece of a larger research effort, "Understanding the Needs of Student Users of Digital Smithsonian Resources," focuses on testing possible approaches to using the SLL in the classroom by students (based on the other components of this project: Volumes 1-5). Assessing information from the Literature Review (Volume 1, ED612909), the Environmental Scan (Volume 2, ED612911 and Volume 3, ED612912), and Student Observations and Interviews in Pittsburgh, PA classrooms (Volume 5, ED612914), targeted features were selected for further classroom prototyping and testing with students ranging from ages 13-17 years old in 8 separate classroom sessions at 3 diverse school sites. The overall project will assimilate the findings of Student Tests and Observations along with other research to address some key questions around methods or requirements for enhancing student motivation and engagement with digital content and tools. [This project was supported through a grant from the Smithsonian Youth Access grant program. For Volumes 1-5, see ED612909 and ED612911-ED612914, respectively.]