I found the following users who may fit your language exchange criteria:

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/throwaway_studying13	2022-06-08	Post	5	English	Spanish
u/tucker727	2022-06-11	Post	5	English	Spanish
u/electroniczuccini	2022-07-08	Post	5	English	Spanish
u/pitiful_flatworm_226	2022-07-15	Post	5	English	Spanish
u/scraggz1	2022-07-22	Post	5	English (Native)	Spanish

Please feel free to comment on the above posts to get in contact with their authors.

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^{Hermes: a bot for r/Language_Exchange | Documentation}

I'm open to talking over discord if you'd like though I am afraid I know nothing about exams I am a native english speaker from the southern US.