Notes about the WCU file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The WCU file type is primarily associated with 'CueCard' by Wade Brainerd. CueCard is a simple flash card program. It supports entering a list of questions and answers, and quizzing yourself on them.