Have your students check the Basic advice section to discover the 7 Keys to Success, a compendium of best practices for learning how to type quickly under the right conditions.
At the beginning of the course, ask your students to type the text in the Initial test, even if they don’t yet have the right typing technique. Note that they can only do this once.
Keep the results of this test; they will allow you to evaluate the students’ progress, in particular by comparing them to the students’ results on the final test. Since both tests are identical, this will give you an accurate indication of their progress.