I am a former Border Patrol Agent from Calexico, CA. Base out of the El Centro District.
Back when I took the test, I spoke absolutly NO Spanish. The testing process is basically to measure your ability to learn. Even though you speak Spanish, you will learn what is called the "I" form in the academy and that is what you will be tested on at your 6 and 10 month exams once you get to your station. What you actually use in the field will be back to the slang Spanish that everyone speaks.
Master At Arms, First Class Petty Officer, United States Navy
WARHEADS ON FOREHEADS!!!!