This Shiny App is to provide a user-friendly interface for users to conduct item analysis based on Classical Test Theory (CTT). Item analysis is used for examining responses to individual test items in order to assess the quality of items and of the test as a whole. It is valuable in improving items or eliminating poorly written or ambiguous item. This Shiny App provides several strategies used for item analysis, including reliability estimates, item difficulty, item discrimination (i.e.,item total correlation).