A: Yes and no -- Credo doesn't have a specific way to know this, the only thing it tracks for an individual student is quiz scores. So including quizzes is the best way to know students at least understand the basic concepts of a tutorial.
A: Yes - the best way to do this is to email that student with direct links to the tutorials and/or quizzes you'd like them to complete. To get quiz results and see student assessment Instruct your students to fill out the form that appears before the quiz, asking for their name, the course, and their instructor's name, so that we can pull the right quiz result. Another option is asking the student to email the result directly to your email address.
Here are some options:
A: In most cases, videos serve to introduce a topic; tutorials serve up the main content, and quizzes cover the tutorial content, but not the video content.