The purpose of this study is to conduct an empirical investigation on academicrnperformance of freshman students of the Faculty of Science , AAU. A randomrnsample of 772 students have been selected from those students who have beenrnenrolled in the Faculty in academic years 1995/96, 1996/97,1997/98 andrn1999/2000. The students have beell.9rouped into two 51rala; Addis_ Ababa _andrnout-of-Addis Ababa region. Non-parametric Statistical methods such as Wilcoxonrnand Ansari-Bradley two sample tests, Lepage test and Spearman coefficient ofrncorrelation based on ranks were used to analyse the data. The results revealedrnthat at a 0.01 degree of assurance there is no significant difference in performancernbetween the two groups students at freshman level. The resu lts of the analysisrnalso showed that there is a significant correlation between ESLCE GPA andrnfreshman GPA.