The Next Generation Science Standards (NGSS) advocate an integrated model of science instruction for middle schools in which the science disciplines are connected rather than separate. This model, used by other countries that are consistently successful in science, has several key benefits, including enhanced student learning and better…

To gather longitudinal student achievement data from schools utilizing the four-day week, Iowa Tests of Basic Skills (ITBS) grade equivalent scores were obtained in 1984 from five rural Colorado school districts for four consecutive years--two years prior to and two years following the districts' change to the shortened week. A first analysis…