Results of the National Assessment of Educational Progress are examined in the context of male and female differences. Considered are the first four years, beginning in 1969 and ending in 1973. Data were gathered in the learning areas of science, citizenship and writing the first year; reading and literature the second year; social studies and music the third year; mathematics and science, for the second time, the fourth year, or 1972-73. In other words, change data were first reported in science and appeared in print in March 1975. Focusing only on sex differences, the results throughout the four age levels present questions and cause speculation about the educative process, the methods, time allotment and emphasis. Some may conclude that learning opportunities are not equal for both boys and girls in the majority of schools. Some may conclude that interst is lower among boys than girls, or the reverse, in a particular learning area. The experience of the reader will facilitate in interpretation of the findings presented here. (Author/BJG) Primary type of information provided by report: Results (Sex).