You can create a single question quiz, in every course. THis quiz has answers agree or dont agree. If the student agrees then award him 100% marks.
For every other lesson/exam in these courses use Conditional activities. (This is the official documentation page http://docs.moodle.org/23/en/Conditional_activities)
What conditional activities do is enable teachers to restrict the availability a course section (in Moodle 2.3 onwards) according to certain conditions such as dates, grade obtained, or activity completion.
Use grade obtained in first quiz as condition to access further sections.