The National Household Education Surveys Program (NHES) is a random digit dialing (RDD) survey program developed by the National Center for Education Statistics (NCES) in the Institute of Education Sciences, U.S. Department of Education. The surveys are designed to help NCES collect data directly from households about important education topics. Like many household studies that rely on landline phone sampling frames, NHES has experienced both declining response rates and increasing undercoverage rates. The study described in this report was designed to examine bias in the NHES:2007 due to nonresponse, as well as bias due to noncoverage of households that only had cell phones and households without any telephones. Results from this study suggest that there is no systematic pattern of bias in key statistics from the NHES:2007, though it might underestimate some indicators such as the percentage of preschoolers who watch two or more hours of TV in a typical weekday and overestimate some indicators such as the percentage of preschoolers with mothers who are not in the labor force. Seven appendices are included: (1) Advance, Refusal, and Community Letters; (2) Household Folder; (3) Interviewer Observation Form (IOF); (4) Sorry I Missed You Card; (5) Appointment Card; (6) Field Non-Interview Report Form (NIRF); and (7) Nonresponse Bias Estimates With Unadjusted Base Weights. (Contains 47 footnotes, 59 tables, 4 figures, and 15 exhibits.)