This the study aimed to reveal the relationship between the post- Traumatic stress and academic achievement of students at the fifth and sixth grade in Salamiah city. The study sample consisted of (200) students from the fifth and sixth grade in Salamiah city and that of the male and female. The researcher used: The scale of post-Traumatic Stress Disorder of preparation Manal el-Sheikh (2010), and had a good degree of validity and reliability The research found the following results: 1 - Find a sample children's exposure to PTSD after traumatic experiences they went through. 2 - There were statistically significant differences between the average degrees of exposure to PTSD variable depending on sex. 3 - There is a statistically significant relationship between exposure to traumatic stress and academic achievement.