This report examines the results of the field test for the base year of the High School Longitudinal Study of 2009 (HSLS:09). The general purposes of the field test were, in anticipation of the base-year full-scale effort, to test instruments, forms, and procedures; to experiment with different approaches to questionnaire content and survey methodology; and to evaluate the overall study design. The HSLS:09 field test faced a number of challenges. In varying degrees, these challenges will require further strategies and efforts be applied in the main study. Specific recommendations are summarized in this report, challenge by challenge. Appendices include: (1) HSLS:09 Sampling Plan for Main Study and Field Test; (2) HSLS:09 Field Test Codebook; (3) HSLS:09 Assessment Pilot Report; (4) HSLS:09 Technical Review Panel Participants and Meeting Minutes; (5) HSLS:09 Field Test Letters, Permission Forms, and Scripts; (6) HSLS:09 Mathematics Assessment Specifications:Final Working Version; (7) HSLS:09 Field Test Classical Item Statistics; (8) HSLS:09 Field Test Item Parameter Estimates; (9) HSLS:09 Student Instrument Scale Reliability Analyses; and (10) Questionnaires. (Contains 42 tables, 10 figures and 9 footnotes.)