At an advanced level, Vaughan assumes you know the rules. They don't care if you can conjugate "to run." They care if you can use "to run," "to run into," "to run over," and "to run out of" in a split-second decision during a heated debate. If you are an advanced learner, you have a specific problem: The Passive Filter.
Vaughan 4.0 destroys that filter. Here is how the Advanced level specifically targets this: Curso de Ingles - Vaughan 4.0 - Nivel Avanzado ...
Most advanced courses treat you like a fragile tourist. Vaughan treats you like a future native speaker. You will leave the course not with a certificate, but with the ability to think in English. And for an advanced learner, that is the only metric that matters. At an advanced level, Vaughan assumes you know the rules
Ditching the textbooks for the mic drop: How the Spanish method is curing advanced learner paralysis. Vaughan 4