What is a collective noun for exams?

There isn't a widely accepted collective noun specifically for exams. You could use some general terms like:

* Battery of exams

* Series of exams

* Set of exams

* Suite of exams

* Group of exams

You could also use more creative options depending on the context:

* A gauntlet of exams (if they are particularly challenging)

* A storm of exams (if they are overwhelming)

* A barrage of exams (if there are many)

Ultimately, the best choice depends on the specific situation and desired effect.