Befikadu ZelekeMujiburahman Abdulahi2026-08-142026-08-142011-09-01https://etd.aau.edu.et/handle/123456789/8868The main purpose of this study was to investigate whether the predictive validity of grade eight Primary School Leaving Certificate Regional Examination (PSLSRE) conducted by Harari Education Bureau(HEB) scores as a whole and English language and Mathematics scores individually predict future academic achievement of students in Ethiopian General Secondary Education Certificate Examination (EGSECE) administered at a national level .So this quantitative study used primary data ,Out of 1646 student who joined the secondary school ,400 students were randomly selected from 4 government secondary schools that satisfied certain predetermined criteria .Statistical tools such as descriptive statistic, Pearson 's correlation analysis and multiple linear regression analysis were used to study the relationship between variables to analysis these data and postulated hypothesis tested at 0.05 significant level. Generally the study revealed that PSLCRE mean score is a high predictor(r=O. 602,p<0. I) of students' performance in the EGSECE CPA. When compared individually grade 8 Mathematics and grade 8 English with EGSECE GPA were found to have a poor predictor (but positive relationship). PSLCR.E mean score (248 and .360 respectively .. A multiple regression analysis method was also used to test how much predictor variables contribute in predicting the criterion measure ,in this model summary revealed that the predictor variable were able to explain 51.4% of the variation in EGSECE GPA. Thus, the study indicates that there is strong positive relationship between student academic achievement of PSLCRE and EGSECE GPA and PSLCRE is a valid instrument to measure Harari Region student's academic successenAssesing Predictive ValidityThesis