This study investigated the predictive relationship between test-taking anxiety, self-assessment, and students’ performance in mathematics among senior secondary school students in Uyo Education Zone of Akwa Ibom State, Nigeria. The study adopted a correlational research design. The population comprised 7,920 Senior Secondary School Two (SSS2) students in 78 public co educational secondary schools within the study area during the 2023/2024 academic session. A sample of 271 students (118 males and 153 females) was selected using a multistage random sampling technique. Three instruments were used for data collection: the Test Anxiety Inventory (TAI), the Self-assessment Questionnaire (SAQ) developed by the researcher, and the Mathematics Achievement Test (MAT) developed by the researchers, Content and face validity were established. TAI and FASQ has Cronbach Alpha reliability of 0.80 and 0.83, respectively while MAT has Kuder-Richardson (KR-20) index of 0.85 indicating high internal cons - Solomon Ahima Heman (INTERNATIONAL JOURNAL OF SOCIAL SCIENCES AND MANAGEMENT RESEARCH, 2026)