Without going into a tremendous amount of detail , it can be easily established that most structure in language is contained within 15 specific patterns. When you master these patterns, you develop a very high structural ability, as long as you have processed the information properly through excellent memory processes. One thing I can tell you is that our teaching methods are very easy to understand and this stuff is not difficult to learn if you're taught correclty. All Bilingual America students who successfully complete a Basic through Advanced course learn, and can successfully use the aforementioned elements and more. This is the most subjective area of all.
Some people are much easier to understand than others.
This is a fact of life. The goal that we have at Bilingual America is to develop a student who can be easily understood. That cannot be accomplished with most people. It is, however, realistic and expected that a person speak with an acceptable rate of speed, as well as be easily understood. In that we're already spoken about vocabulary and structure, let's address the issue of speed.