Challenge yourself against the Klingon Language Certification Program test. No reference material is permitted, and no notes may be kept after the exam. Bring only what you have in your head. You will have one hour to answer 20 questions (plus an additional 10 for Level III).
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Using MS Outlook or Google Calendar or a similar calendar program, you can subscribe to an .ics feed of the KLI Events Calendar with this link:
https://www.kli.org/events/list/?ical=1
This official feed does not include events that have already happened. It lists only upcoming events.