GradeCam was designed to use a unique student ID for each student - usually a district ID - for tracking data longitudinally. We encourage you to use the student unique ID and then you can just use the last 3 or 4 digits for the GradeCam ID on the form when printing.
You can create a generic GradeCam ID which can be used year after year for any student but the unique student ID should not be re-used as it is unique to each student. You are not able to use the same GradeCam ID for two students within the same year, though.
Let me know if you have any other questions.