Success Stories

I wholeheartedly recommend the Dia Gerontoudi Prep Center to any student aspiring to study abroad. The center’s commitment to academic excellence and personalised support are of the highest standard and have played a crucial role in my academic success.

I owe so much to Dia Gerontoudi Prep Center and the incredible people who work there. They didn’t just prepare me for exams-they helped shape my future. I wholeheartedly recommend them to anyone looking for not just top-tier preparation, but also genuine support and encouragement along the way.

MPhil in Finance, University of Cambridge / MSc in Finance, Florida International University / BSc in International and European Economics, AUEB

During my preparation for an MBA in the USA, I worked closely with both Dia Gerontoudi and Thomas Kalandranis. For her part, Dia was much more than a great teacher. She was a real mentor! Her perfectly organized method (class courses and labs) enabled me to identify my weaknesses and improve on them, in order to excel at the GRE/GMAT and TOEFL exams.

As a person with an engineering background, I sought help with the verbal section for the GMAT exam. I, therefore, embarked my MBA preparation journey by reaching out to Mrs. Dia Gerontoudi, who effectively guided me and helped me significantly boost my Verbal scores. In the end of our sessions, my Verbal score outperformed my GMAT Quant result (self-taught), a testament of the great support, tips and tricks and teaching effectiveness provided by Mrs. Gerontoudi – for which I am very grateful.

Applying to the top US Law Schools can be quite challenging. Thanks to Mr. Thomas Kalandranis guidance, I achieved a high TOEFL score, which opened the doors to top US Universities.

I’m excited to share my journey to the Master’s in Real Estate Economics and Finance at the London School of Economics (LSE), and I owe so much of this achievement to the incredible mentorship and support I received along the way. Without the guidance and belief of those who helped me, I’m certain this dream wouldn’t have become a reality.

I cannot express enough how grateful I am for Dia Gerontoudi Prep Center. Dia and Thomas are not just outstanding tutors who prepare individuals for the most competitive programs—they are true mentors who have profoundly shaped my journey.

I am thrilled to write this recommendation for Dia Gerontoudi Prep Center. As a recent admit to the Master’s program in Project Management at Boston University, I can confidently say that the exceptional guidance, resources, and unwavering support I received from this center were instrumental in my success.

It may sound like a cliché, but it is absolutely true that without the catalytic assistance of Dia and Thomas, this magical journey that lies ahead of me would never have become a reality.

Mrs. Dia Gerontoudi is a person who truly cares about her students. Her approach helped me not only with the GMAT test but also with building a way of thinking which helps me even in my everyday life. I understood clearly that she is not just a teacher, but an academic with a gift to maximize the potential of her students. I cannot express how highly I recommend Dia Gerontoudi Prep Center for anything that has to do with university applications and GMAT preparation.

Applying for graduate programs is undoubtedly a draining process and the importance of having the right allies along the way simply cannot be overstated. For me, the right allies were Dia Gerontoudi and Thomas Kalandranis.

Having worked with Dia Gerontoudi and Thomas Kalandranis before on the GRE exam and on M.Sc. admissions, Dia Gerontoudi Prep Center was the obvious choice when I started thinking of GMAT and applications to MBA programs.

Applying for a Master’s degree to some of the most prestigious universities in the world is truly a life-changing decision. I realized that the key to achieving my goal would be selecting a team with a high level of professionalism and a strong work ethic.

The instruction I received by Mrs. Gerontoudi throughout my preparation for the verbal and written section of the test was consistently insightful, highly personalized, and, most importantly, to the point.

My admission to Georgetown University became possible thanks to the invaluable assistance provided by Mr. Thomas Kalandranis and the Dia Gerontoudi Prep Center.

Applying to the Ph.D. program at the most prestigious engineering universities in the world is definitely a stressful and tough task as they demand a nearly perfect score on TOEFL and an exceptional personal statement.

If you’re aiming to pursue your master’s at a competitive university, Dia Gerontoudi Prep Center is the ideal place to ensure you will receive the proper guidance and materials to achieve your goal. Mr. Kalandranis assisted me with my TOEFL preparation, leveraging his experience to help me attain my desired score within the timeline I had set.

I contacted Dia Gerontoudi Prep Center on the strong suggestion of a good friend, intent of aiming for a top MBA program in the USA. Honestly, I was a little concerned about whether the scale of my ambitions and dreams was in fact too much for my abilities.

Dia Gerontoudi Prep Center played a pivotal role in my successful application process for the Masters in Financial Analysis (MFA) program at London Business School…I am immensely grateful for his mentorship, and I have no doubt that his expertise and dedication will continue to empower the journeys of many aspiring candidates.

Dia Gerontoudi is undoubtedly the best prep center for university preparation in Athens. My experience with other prep centers has not been exactly pleasant. I first met Mr. Thomas Kalandranis to seek help for the TOEFL exam preparation. He immediately helped me to build confidence on the Speaking Section, enhanced my knowledge of the English language and the skills required from the exam, and informed me in a very detailed way over the testing process, which was extremely important for the final outcome. I also attended classes for the IELTS exam, in order to apply for postgraduate studies of Architecture in the UK, with a positive IELTS score of 7.5.

Preparing for the GMAT can be challenging for many, due to the time and effort it requires, as well as the unfamiliarity with the type of questions asked. Mrs. Gerontoudi played a pivotal role in my accomplishment. Her teaching approach is strategic, recommending specific methods for different question types and sharing time-saving tips that proved invaluable during the exam. In addition, the material and exercises she provides are more than adequate, as they cover all kinds of questions that could possibly be encountered in the exam.

Dia Gerontoudi Prep Center was the best choice for anyone who wants to get accepted from competitive universities, in my case in Dentistry. I started my preparation for GRE and TOEFL and I was really content with my performance.

His methodical approach, pertinent advice and insightful expertise gave me a significant advantage. Against the backdrop of a demanding year, our virtual meetings provided me with the clarity I needed to streamline the various work streams of the application process. Owing to Mr. Kalandranis’ thorough understanding of the US universities, I was able to showcase my strengths in the most favourable light.

Five years after my rewarding experience at Dia Gerontoudi Prep Center, I have embarked on my journey at Harvard Business School. As I look back, I am profoundly grateful for the pivotal role that both Dia and Mr. Karalis played. They did more than prepare me for the GMAT; they laid a strong foundation for an ongoing pursuit of excellence.

Dia Gerontoudi Prep Center was my first choice when it came down to start the formal preparation for my Computer Science Masters applications to some of the world’s most competitive universities. The application process can seem daunting at first, so I approached it by breaking it down into manageable parts and identifying areas where I needed improvement.

When I first considered applying to MBA programs, I could not imagine how challenging this process could be. Attending classes with Dia Gerontoudi Prep Center armed me with the knowledge and confidence to achieve a high score in the GMAT exam and be admitted to top universities, including Yale SOM, which I finally attended on a merit-based scholarship.

Yet after a few months alongside her guidance, I managed to score 40 (91st percentile) which boosted my overall performance significantly alongside my Quant score.