At which level of kyu or dan is providing the ki-test/exame? Thanks.
What Mary may want to say is that not all styles of Aikido.. in fact only q few.. test for ki ability. It is mainly done in ki aikido as far as I know.
In most other styles it is assessed either indirectly or not really at all as part of the general evaluation of the person grading..
Any style where you test your ability to shoot balls or rays of ki energy or test your ability to lift anything with your mind is probably not affiliated closely to hombu Dojo