This thread discusses the Content article: EFL vs. ESL What is the difference?

This article still is one of our most read articles even after 4 years.

We still see little change in the way EFL and ESL are used; however, there has been a slight shift as more and more people become educated of the differences.

One important fact we have noticed is that since ESL is taught within the USA classrooms, and seeing how the States has a broad influence on much of the world, teachers are exposed to the acronym early on and possibly become accustomed to it. That in itself may account for the reason why ESL is still highly intermingled with EFL.