can "show score/show results" be set to be on for a brief review after a test, and then shut off again to limit the time students have to access the test again?

Teachers need to be able to edit exam properties after "end exam" is clicked. We need to uncheck students' ability to see results (questions and their answers). We want them to review their results, but then not be able to once they leave the classroom.

Once a student takes a test, the student has access to the entire test, with answers, indefinitely in their learner report. This is a huge test integrity issue. According to your support team, there is no way I can allow my students to review their test in class and then restrict their access so that they cannot tell the next class what every question on every test is. The next class will then simply have to memorize questions and answers to receive a 100%. Also, if a student is absent and has to take the test a few days later, she can look at her friend's account and see the entire test, verbatim. I will have to rewrite every single question on every single test every term. There needs to be a way that the teacher can grant access to the student's test and then restrict access once the class review has been completed. I have already given two tests that I set to allow the students to review their questions and answers before I realized I could not undo this. In our old program, I could change the settings after the test had closed. This allowed me to open the answers and rationales and then close them again. Please address this issue.