If your teacher has given you a code, this means that they want you to join a teaching group on Kerboodle.
A teaching group is a group of students within individual courses on Kerboodle. For example, if you are a GCSE Science student, your science teacher may have set up a teaching group for your whole science class in the GCSE Science course on Kerboodle. This means that your teacher can keep all of your work and marks together in one place.
To join a teaching group with a code, login to Kerboodle and find the correct course on your Kerboodle home screen. Once you are in the course, click the button marked Join teaching group. Enter your code and click Join. You will now be a member of the teaching group.