Do you allow your students to retake tests and/or quizzes? Ensure that students are ready for the retake and that the preparation is a valuable experience by having students fill out a retake request form.
Students must think about three ways to improve their understanding of the material and reflect on why the assessment didn't go as planned. Allowing students the opportunity to go back and improve their understanding greatly improves their long-term comprehension, if done correctly (i.e. going back to revise understanding, not just showing up and hoping for the best). Reflection is a the heart of this process, and this form is perfect to keep students productive in their retake endeavors.
This can be used with any subject and at any level!