I make it a point to not have more than 2 students at any given time because it is very important to me to make a human connection with you and focus intently on your development. After all, the student - instructor relationship in freediving should one of great trust and openness.
Education is a never ending pursuit. To that end I have started a large group on FB where we discuss freediving science and improve / update our knowledge on techniques and best practices. I also am in close contact with many instructors worldwide and try to further my skills and increase my certifications to keep improving as an educator.
Apnea Academy is one of the first freediving academies, its courses are long and very thorough, placing great emphasis on good breathing, technique and relaxation to ensure a pleasurable experience in the water first and foremost. See a simple comparison between the different academies here.