You can do this with Track Progress tool, which is found for each course on a teacher's My Educake page, here:

Choose the subject, unit and class to see the performance for each student across multiple topics. It's really useful for identifying problem areas that students or classes haven't quite understood.

Here's what you'll see once you've selected your class and unit:
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You can download the results as a spreadsheet by clicking the blue "Download Results" button in the upper right corner.