Abstract
The purpose of this study was to determine the extent conscientiousness and extraversion correlate with school adjustment among secondary school students in Abia State. To carry out this study, two research questions were posed and two null hypotheses were formulated and tested at 0.05 level of significance. The study adopted a correlational research design. A total of 878 respondents drawn from the entire population of 8783 senior secondary school class II students drawn through multistage sampling techniques made up the sample for the study. Two instruments were used for the study. The researcher developed one of the instruments namely; “Personality Traits Assessment Questionnaire (PTAQ) while “School Adjustment Questionnaire (SAQ)” was adapted from School Adjustment Scale (SAS) developed by Ekennia (2016). These instruments were subjected to face validation by three experts, two from the Department of Guidance and Counselling and one from Measurement and Evaluation; all from Michael Okpara University of Agriculture, Umudike. The stability of the instruments was determined using Pearson’s Product Moment Correlation Coefficient which yielded reliability indices of 0.83 and 0.93 for PTAQ and SAQ respectively. The internal consistency of the instruments was determined using Cronbach Alpha method and reliability indices of 0.78 and 0.87 were obtained respectively for PTAQ and SAQ respectively. The data obtained through the administration of the three instruments were analyzed using Pearson’s Product Moment Correlation Coefficient (Pearson’s r R2 coefficient of determination) to answer the research questions, while linear and multiple regression analyses were used to test the null hypotheses at 0.05 level of significance. Results revealed as follows: Conscientiousness significantly correlated with school adjustment among secondary school students as it predicted 71.1% of school adjustment among secondary school students. Extraversion significantly correlated with school adjustment among secondary school students as it predicted 56.4% of school adjustment among secondary school students. Among the educational implications was that the extraverted students could constantly dominate classroom interactions and thereby overshadow the reserved and neurotic students. This might make other students to be more maladjusted in the school. It was thus recommended among others that government should deploy trained counsellors and psychologists in all the public secondary schools to help the students’ adjust properly in schools. Also, teachers should vary their teaching methods and instructional materials to accommodate the personality differences that exist among the students for their proper adjustment in the school

Keywords
Conscientiousness, extraversion, correlate, school adjustment