In the Honors Option for the first level of Excellence in Literature, we suggest that your student may wish to take the Freshman Composition CLEP. College Board has updated that exam and it is now called the College Composition Modular CLEP.
To clarify, this exam is optional. If you have a student who will be studying several levels of EIL, I recommend waiting until he or she has completed at least two levels before taking any of the essay-based CLEPs. More practice is always better, because writing is a skill that improves with use.