It holds several national and international accreditations, which guarantee the quality of the teaching and services provided by the school. To obtain these recognitions the school must comply with strict regulations relating to school premises and facilities, teacher qualifications, teaching quality, administration and welfare.

CIAL's approach is based on communicative language teaching methodology, placing emphasis on language for communication. Lessons are planned to include a balanced combination of activities to help students learn and practice the four skills: reading, writing, listening and speaking.

Course levels are linked to the CEFR (Common European Framework of Reference for Languages), and learning objectives for each course are expressed in can-do statements.

Classes are progressive from the starting dates, but apart from absolute beginners, who must begin on the published starting dates, students can join a class at any time if vacancies exist at the suitable level.

Groups have a maximum of 8 participants (12 for Easter and Christmas Courses) so that monitoring and assessment are continuous and personalized.

Individual and Private Group courses are programmed according to the students' specific requests including different professional and cultural themes if requested, and students are welcome to bring documentation they may need to work on.

Over the years CIAL has developed teaching materials, now published and used worldwide including textbooks, DVDs and CD Roms.

CIAL employs only qualified teachers. All teachers are native speakers, hold a university degree and have followed CIAL's Teacher Training Course. Refresher courses are held regularly to bring staff up to date in new techniques and materials. All the teachers are friendly yet highly professional.