Uncheck the checkbox that says "Show test results to student after end of test" on the Results tab of the Test Properties dialog.
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If you are using Lectora Online the results should work fine on the iPad. Are you using Customized Test Results, or just the standard ones that are generated?
Please let us know the issues you are seeing, and if you can please reference this post and tell support what your Lectora Online user name is, and the title you are having trouble with.