I have been working with Jonathan for the last two and a half years. I got in contact with him because I needed some help in order to get the Certificate of Proficiency in English. I was looking for a native teacher, with a deep knowledge of English and reliability in his or her schedules. Jonathan meets all these requirements and, at the same, time he has a variety of resources that have helped me greatly. I believe that hiring him has been a very good decision. I have not only passed the exam but also my writing, use of English, speaking and spelling have improved dramatically during these two and a half years working with him. The money that I have spent on these classes has paid off with a good result and Jonathan will continue being my teacher.