Dear f++,
Thanks for your entries.
We like the spelling out of "Intensive English Program," and the @ to replace "at" is creative; however, the @ symbol does not universally translate to "at" and this may be confusing for English learners.
Entries #3 and #4 look a bit too much like business cards.
The Horned Frog logo in #5 is great.
One thought is that with "The" and "English" in one color, and "Intensive" and "Program" in another, the eye wants to move up and down reading "The English Intensive Program," which would be incorrect.
Incorporating the Horned Frog image with a globe image might be interesting.
Thanks for your efforts.