Since the mid-1980s, tremendous attention has been focused on what students should know and be able to do as a result of K-12 education. An overview of U.S. citizens' opinions of what standards should be emphasized in the K-12 curriculum is presented in this report. The findings are based on responses by 2,553 adults who rated whether "definitely,""probably,""probably not," or "definitely not" a standard should be included in the curriculum. The results suggest that although Americans believe that most subjects traditionally viewed as components of the U.S. public-education system have a place in the curriculum, they also believe that these areas should not be equally emphasized. The survey can help guide curriculum developers by suggesting those content areas that are deemed most needed, as well as reveal standards that might be selected within content areas. The report provides guidance in creating a comprehensive curriculum given the constraints of "available" instructional time in a typical K-12 education system. The findings also relate to the differing opinions of various subgroups that can be used to make minor adjustments in the selection of standards based on the general education level, age, and income level of the local community in question. Sixteen appendices provide overviews of the data. (RJM)