The inlingua method is based on decades of practical experience. The method continues to be enhanced and perfected through close adaptation to ongoing linguistic and social developments. Language trainers are trained in the universal inlingua methodology. They design their lessons according to standardized training techniques and specially developed training materials, based on internationally recognized level systems.

Since we learn languages best by speaking them, a decisive factor of success inherent to the inlingua method is that only the target language is spoken in the classroom - and that means not only by the trainer but, much more importantly, by the students themselves. Vivid examples and practical application of the language take precedence over bland theoretical precepts. The students' progress is assessed at regular intervals to make sure that the lessons are carefully tailored to their individual needs. By pointing out mistakes, inlingua encourages the learners to correct themselves and use the language actively.

Quality standards that are uniform all over the world are also the key to the unique inlingua transfer principle: Courses begun on any level can be continued uninterrupted in an inlingua Language Center in another city or country - with fees already paid being fully credited to the new course.