Yes, you can filter the list of quizzes that you see on your My Educake page. You can do this for one or multiple classes.
Filtering the quizzes that you have set
Start by clicking the "Filter" button, which you can find here:
Select the year of the class you're looking for. When you click a year, all of the classes in that year will appear.
Click the class whose quizzes you would like to see. This will apply the filter immediately. To deselect a class, just click it. In this example, only the quizzes that this teacher has set for class 9Y are displayed:
Here is what the filter will look like if you want to show all the quizzes you've set for two classes, 9Y and 10Z:
Filtering quizzes form all teachers at your school
You can also use these filter buttons to see all quizzes that have been set to a class by any teacher at your school, not just you.
Start by clicking on "Show other teachers' quizzes", shown below. This will expand the quiz list to show all quizzes that have been set by teachers at your school. They'll be arranged by teacher.
Then use the filter buttons the same way you would above. Toggle a filter on or off by clicking it.