Unfortunately, Mathletics does not have a placement test for students.

Each topic has an 'Are You Ready?' test for students to complete. These activities are mainly used to test the student on their knowledge of the selected topic prior to, and after completing all the activities within the topic. The test's select questions from the various activities within that topic to see if the student is ready to continue on with the topic at the assigned curriculum level or move on from that particular topic.

If the students are getting 85 - 100% in the 'Are You Ready?' test, they are in the perfect course for their ability. However, if they receive a lower score, you may need to look at perhaps amending the course the student is on.