To evaluate the extent of acceptable responses, 58 National Assessment of Educational Progress (NAEP) social studies exercises were administered in 1975 to a random sample of 13 year olds attending schools in north Mississippi communities no larger than 3,500 persons. A multiple matrix sampling technique was used for both the 390 students from randomly selected schools and the exercises. Data were analyzed according to male-female and black-nonblack extreme rural samples. No significant achievement difference was found between Mississippi males and females; however, nonblacks generally performed at higher levels than blacks. Mississippi students generally gave fewer acceptable responses than those in the NAEP sample. Further research was recommended to explain the disparity between Mississippi and national samples, to explain the generally low performance of Mississippi black youths, to verify results by administering NAEP social studies exercises released in 1976, and to show to what extent north Mississippi rural educators accept NAEP social studies objectives. It was also suggested that the Mississippi Department of Education evaluate NAEP objectives for potential usefulness in statewide assessment. (RS) Aspect of National Assessment (NAEP) dealt with in this document: Results (Replication).