Appendix A. About the study This appendix provides background on the current reading proficiency among students in the Commonwealth of the Northern Mariana Islands (CNMI) and the factors that might be associated with it and discusses Head Start and other CNMI early care and education programs.

Appendix B. Methods This appendix describes the study’s data sources, the process for matching and cleaning data, measures and the process for recoding variable, and analytic methods.

Appendix C. Supporting analyses This appendix describes the study population’s sample descriptive statistics, as well as the results of the data analyses.

Appendix D. Supplementary analyses This appendix provides the results of supplementary and sensitivity analyses. These analyses include the results of regression models using only complete case data, regression analyses examining the effects of extreme ages at kindergarten entry on the results where the values less than 2.5 and greater than 97.5 percentiles were removed, and regression moderator analyses.

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