This research paper describes the method of construction and standardization of a tool to measure examination anxiety of adolescent students. 2030 students belonging to the age group of 13-15 years from 19 schools under West Bengal Board of Secondary Education, participated in this research. The first draft of examination anxiety scale consisted 40 items. After reviewing the items and item analysis, the number of items were reduced to 38. EFA [exploratory factor analysis] was carried out on obtained data. EFA revealed that total 21 items having factor loading greater than 0.40, are selected. They distributed under four factors such as, Bodily symptoms, Cognitive, Emotional reaction and behavioural reaction. CFA [confirmatory factor analysis] was executed on another sample group, consisted of 402 number of adolescent students of age group13-15. CFA results also supported the results of EFA. All the goodness of fit indices showed that the model is a good fit model. For concurrent validity, Examination Anxiety Scale made by researcher and Test Anxiety Inventory by Spielberger were administered on the same occasion on 110 school students of the age group 13-15. Coefficient of correlation of two scales was estimated. The validity of Examination anxiety Scale is 0.71. The reliability coefficient of the examination anxiety scale using test-retest, split half and Cronbach's alpha methods were 0.801, 0.767, 0.764 respectively. Norms show that 16 percent of the students belong to the high examination anxiety group, 66 percent of the students in average examination anxiety group and 18 percent in low examination anxiety group.