There are many handouts and images in the first section that will give you a better idea of what it means to be proficient in a foreign language. With these materials you will be able to prepare and motivate yourself to do your best on your IB German exams.
According to IB: "Assessment is an integral part of teaching and learning. The most important aims of assessment in the DP are that it should support curricular goals and encourage appropriate student learning. Both external and internal assessments are used in the DP. IB examiners mark work produced for external assessment, while work produced for internal assessment is marked by teachers and externally moderated by the IB."
"The approach to assessment used by IB is criterion-related, not norm-referenced. This approach to assessment judges students’ work by their performance in relation to identified levels of attainment (rubrics), and not in relation to the work of other students."
This TTLG course is primarily focused on the most challenging part of any foreign language: speaking. You will hear many examples of different speaking levels, so that you can self-assess where you are now with your German speaking skill, and understand what it takes to score at a higher level.
Be sure to use the "I can do" checklists to track where you are now with all 5 of your German skill sets. This collection of resources provides you with an effective road map to success with developing better German language skills.
The better you understand how you will be assessed, the better you can prepare. Good luck!