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The 2004 print edition includes 38 indicators in six main areas : ( 1 ) enrollment trends and student characteristics at all levels of the education system from elementary education to adult learning ; ( 2 ) student achievement and the longer term , enduring effects of education ; ( 3 ) student effort and rates of progress through the educational system among different population groups ; ( 4 ) the contexts of elementary and secondary education in terms of courses taken , teacher characteristics , and other factors ; ( 5 ) the contexts of postsecondary education ; and ( 6 ) societal support for learning , including parental and community support for learning , and public and private financial support of education at all levels . Today the emphasis has shifted from equipment to conducting system level experiments designed to develop conceptual understandings of complex interactions among weeds , crop genetics , soils , topography , water , insects , diseases , and nutrient cycling in watersheds . The 2002 print edition includes 44 indicators in six main areas : ( 1 ) enrollment trends and student characteristics at all levels of the education system from preprimary education to adult learning ; ( 2 ) student achievement and the longer term , enduring effects of education ; ( 3 ) student effort and rates of progress through the educational system among different population groups ; ( 4 ) the quality of elementary and secondary education in terms of courses taken , teacher characteristics , and other factors ; ( 5 ) the context of postsecondary education ; ( 6 ) and societal support for learning , including parental and community support for learning , and public and private financial support of education at all levels . A large number of homes in the United States Virgin Islands utilize onsite sewage disposal systems because of the unavailability of public sewerage . Finally , with reference to the claim that evidence was concealed , it should be pointed out that in every legal system it is possible , within the limits of the law , to prevent the introduction and use of certain confidential material . Emphasis on developing lumped-parameter linear system models from a set of primitive elements in a systematic manner . The 2005 print edition includes 40 indicators in six main areas : ( 1 ) enrollment trends and student characteristics at all levels of the education system from elementary education to adult learning ; ( 2 ) student achievement and the longer term , enduring effects of education ; ( 3 ) student effort and rates of progress through the educational system among different population groups ; ( 4 ) the contexts of elementary and secondary education in terms of courses taken , teacher characteristics , and other factors ; ( 5 ) the contexts of postsecondary education ; and ( 6 ) societal support for learning , including parental and community support for learning , and public and private financial support of education at all levels .