The study examined the Relationship between Post Traumatic Stress Reaction and School Adjustment among Primary School pupils living in Conflict Areas of Wukari, Taraba State. From a population of 49,950, a sample of 382 pupils, out of which 211were males (54.4%) and 170 females (44.6%) was randomly selected. The study was guided by three major objectives. The first was to examine the relationship between post traumatic stress reaction and school adjustment, second was to find out the relationship between post traumatic stress reaction and school adjustment on the bases of gender, and the third was to examine the relationship between posttraumatic stress reaction and school adjustment base on school type. A total of three hypotheses were formulated and tested. Ex post facto design was employed in the conduct of the study. The instruments used to collect data were Biodata form, Child Reaction to Traumatic Events Scale CRTES-R (Jones, Fletcher & Ribbe, 2002) and Child Adjustment Scale CAS (Santrock & Warshark, 1979). Pearson Product Moment Coefficient (r) was the statistical tool used to analyze the data. Results of the analysis indicated that Pupils' posttraumatic stress reaction negatively correlated with their school adjustment (r= -0.875, p=0.000). Similarly, negative influence exists between male and female pupils' posttraumatic stress reaction on their school adjustment (r=- 0.913, p=0.000. r=-0.818, p=0.000) and significant negative correlation also exist in Conventional and Nomadic school pupils' posttraumatic stress reaction on their school adjustment (r=-0.874 p=0.000. r=-0.881). It was recommended that appropriate psychological intervention should be given to the pupils who have suffered post traumatic stress reaction so as to enhance their school adjustment through school psychologists, counsellors and teachers among others.