This study investigated the Relationships among Parents' Educational level, Income, Academic Adjustment and Performance of senior secondary school students in Kaduna Metropolis, Nigeria. The study adopted the expost-facto Research design and a total sample size of 285 students from SS1 and SS2 were drawn from four public and private secondary schools in Kaduna Metropolis. Two instruments were used for data collection. A questionnaire on Parental Educational level, Income and Academic Adjustment and an instrument to test Academic performance. Four hypotheses were tested using Pearson Product Moment Correlation. The findings revealed that significant positive relationship exists between Parental educational level and academic performance of senior secondary school students, r = .651 p = .011, significant positive exists between Parental income level and academic performance of senior secondary students, r = .550 p = .012, significant positive relationship exists between Parental Educational and academic adjustment of senior secondary school students, r = .505 p = .037 and significant positive relationship exists between Parental income level and academic adjustment of senior secondary school students, r = .842 p = .000. From the findings, it was recommended that parents should provide a home environment that supports children's learning and motivate them to pursue better educational outcome at school. Parents should also endeavour to show positive attitude towards their children's education by being actively involved and giving them all necessary encouragement. Furthermore, NGOs, P.T.As, Federal, State and Local Government should join hands in providing adequate facilities in schools to prevent frustration among students. It was further recommended that school authorities should encourage students of low income background to participate in different activities so that they can compensate their feelings of inferiority through education and extra-curricular activities.