ESL does not count for the foreign language credit. Students take it so that they can later enter "mainstream" English classes. Of course they get regular credit for it, though, unless they are adult English language learners in noncredit classes. Also, the term "ESL" is slowly falling out of use since so many people who are in ESL classes know many other languages, so it's more like English as a Fourth or Fifth Language. The field of teaching ESL is actually called TESOL: Teaching English to Speakers of Other Languages.
Yeah, that is very cool when schools offer language classes (and credit) for native speakers! At one school where I work they are hoping to implement ASL classes specifically for deaf students (they already offer general ASL classes) so they can learn more about their native language. I really hope it works out.
Whoa...so they are explicitly excluding ASL there, if I read it correctly?
