Here you will see all the Success-Stories of our students. This is the Dia Gerontoudi Prep Center Hall of Fame, which features alumni from all of the world’s top universities. This is no coincidence, as we are the only boutique postgraduate preparation centre in Greece. In our centre we dedicate to each and every one of you the time that he/she deserves. You are all important which is reflected in our successes. On the map you will see the over 230 universities around the world where our students have studied or are studying and some of their most important stories!
Spilios Proiskos
Account Manager, Hilti Group / MBA UCD Smurfit Graduate Bus. School / Diploma in Production Eng. and Management, Polytechnion Kritis / TOEFL 101 / GMAT 650
I feel extremely lucky that I trusted Dia Gerountoudi Prep Center while preparing myself for an MBA. Dia and her staff, tutored me all the way till the GMAT exam. Also, as a part of a thorough preparation, they significantly assisted me with the editing of my applications for the Business Schools.
George Cambanis
MiM HEC Paris, Merit Scholarship / BA in Philosophy, University of Chicago / Athens College (HAEF) / GRE V167/Q167
I had a great experience preparing for the GREs under Ms. Gerontoudi’ guidance and mentorship. She was quick to identify my strengths and weaknesses and prescribe a mode of studying that was most conducive to achieving my desired level of preparedness.
Chris Mavridis
PhD in Electrical and Computer Engineering, University of Maryland, A. James Clark School of Engineering, Distinguished Graduate Fellowship / Diploma in Electrical and Computer Engineering, NTUA / Q168/V159
Who says GRE preparation is an unpleasant or even meaningless procedure in your way to excel in the exams? Thanks to Dia Gerontoudi and her group, I spent two very productive (in terms of knowledge acquisition) months which built my conidence and helped me manage the demanding Ph.D. application process of the US universities.
Dimitris Mavrogiannis
Marketing Consultant, Anelixis SA / MSc in Management of Innovation, RSM Business Scool / AUEB BSc in Marketing
I would like to thank Dia Gerontoudi Prep Center as it was instrumental for me in the successful outcome of my applications. I will not mention at all the excellent preparation for IELTS and GMAT because they are self-explanatory. The notable difference of this particular center is its people.
Giannis Ferentinos
MSc in International Shipping and Finance, Henley Business School, University of Reading / BSc in Economics, NKUA
I chose to prepare at “Dia Gerontoudi Prep Center” after a recommendation of a friend, whose word-of-mouth advertising about his experience there lived up to my expectations for a top quality preparation.
Ioanna Dretta
CEO at Marketing Greece SA / Mid-Career Master in Public Administration, Harvard University Kennedy School of Government, and Kokkalis fellow / MSc in Soil Mechanics and Engineering Seismology, Imperial College London / Civil Engineering NTUA
Dia Gerontoudi was my tutor during my preparation for the GMAT and TOEFL examinations, as well as my counselor and editor for my application to the Harvard Kennedy School. In a few words, it was both a productive and enjoyable experience.
Stelios Kostalas
MC/MPA Harvard University
Dia Gerontoudi played a crucial role in my successful preparation for Harvard University. Her efforts, efficiency as well as her pluralistic teaching techniques combined with a charismatic sense of humor (when i was about to quit my goal), enabled me overcome my weaknesses and accomplish my “mission”. No “Missions impossible” for Dia…
Tryfon Christopoulos
Quantitative Operations Research Analyst, Northern Trace Capital, NY / MSc in Operations Research, Columbia University / Karelias Scholarship / Dipl. in Mechanical Eng., NTUA / Arsakeio Psychikou
Choosing to prepare at Dia Gerontoudi Prep Center was a rather straightforward choice for me. Dia’s brand name and her previous success stories, along with the positive feedback I had received, made me feel very confident about my choice.
Stamatis Paterakis
Lead Quantitative Analyst, Citi, NY / MSc in Operations Research, Columbia University / Dipl. in Electrical Engineering NTUA / Athens College (HAEF) / GRE 167/156
Attending the GRE courses at Dia Gerontoudi Prep Center played a key role in the success of my graduate school applications. The experienced tutors, with their methodical, highly organized approach to the test, along with the friendly and stimulating environment, helped me achieve the high score I was aiming for.
Dr Manolis Stavrakakis
First Year Coordinator-Fellow Design Tutor, Bartlett School of Architecture, UCL/History and Theory Tutor, AA, London/PhD AA/MSc in Advanced Architectural Design, Columbia University/Ptychion in Architecture NTUA
Dia Gerontoudi has been my teacher for many years. More than a teacher she has been – and still is – my mentor. She has been guiding me throughout my postgraduate studies for my Master’s degree (Advanced Architectural Design) at Columbia University and for my Ph.D. at the Architectural Association.
Nikolas Vlavianos
PhD Candidate in Design and Computation, MIT / Researcher MIT Media Lab-Architect / SMArchS MIT /M.S.AAD Columbia University / Architecture NTUA
Dia is one of the most skilled individuals I’ve ever met in the arena of graduate studies preparation. The dedication to her students and their ambitions is remarkable. I highly recommend it.
George Eleftheriou
Co-founder & CEO Sentio Solutions Inc., California / MSc in Management Science & Engineering, Columbia University / MBA NTUA / Electrical and Computer Eng. NTUA
I have known Dia Gerotoudi since 2009, when she gave me lessons for the verbal section of GMAT. The excellent level of her teaching led me to choose her as a personal tutor in my preparation for applications to graduate programs two years later.
Nikolas Mourtzanos
Director, EY Parthenon, Boston / MBA Chicago Booth / Electrical and Computer Eng. NTUA / TOEFL 107 / GMAT 720
I chose the Dia Gerontoudi center for my MBA preparation having the best recommendations from my sister, Elia Mourtzanou (MBA-Wharton Alumnus, as well as acceptance from INSEAD, MIT) for the quality and efficiency of their work
Xenia Mastropetrou
Marketing, Strategy, Innovation at Ecolab, Chicago / MBA Kellogg School of Management / BSc Management Science & Technology AUEB
I had the luck to work with Dia for the preparation of GMAT and TOEFL tests. Not only did she perfectly organize the study material and gave a valuable input on how to strategically approach the test, but she also provided me with moral support during this challenging period.
Markos Kladeftiras
Risk Analyst, European Central Bank / MSc in Transportation Eng., MIT / Surveyor Engineer NTUA
My GRE preparation went excellent, and even though I had only one chance to take the test I succeeded! The structure of the course, as well as the very helpful material, contributed significantly to that. However, in the DiaGerontoudi Prep Center I did not find only that; I also found people that advised me when I needed help.
Panagiotis Papadiamantis
Co-founder & CFO at PNOE / MSc in Management Science and Engineering, Stanford University / Mechanical Engineering NTUA / A.G. Levendis Scholarship / Athens College (HAEF) / GRE 163/158
Throughout my efforts to get into the graduate school of my choice, I had the chance to study at Dia Gerontoudi Prep Center. For me, it was much more than just a prep center. It was a source of moral support and a place where I could sense the mentality of a graduate academic environment
Apostolos Grevenitis
Consulting Analyst Accenture Washington DC / MMS, The Fuqua School of Business, Duke University, Dean’s Recognition Award και Fuqua Scholar (10%) / Electrical Engineering NTUA / Athens College (HAEF) / GMAT 740, TOEFL 111
Absolutely the best when it comes to standardized tests preparation, Dia Gerontoudi Prep Center has helped me invaluably in my attempt to achieve high scores in both the GMAT and the TOEFL.
Dorotheos Papavasilis
Master of Management Studies, The Fuqua School of Business, DUKE University, DUKE Kunshan University / Dipl. in Mechanical Engineering, NTUA
There is no doubt that Dia Gerontoudi Prep Center is synonymous with the top-notch preparation for post graduate studies in Greece. Mrs Gerontoudi and Μr Karalis are specialists in their field and along with the endless pool of exercises and lab simulation tests they constitute an unbeatable team and source of knowledge that can boost every individual’s preparation process.
Stelios Sarantis
Hellenic Dairies SA / MSc in Food Science and Technology , The Ohio State University / Chemical Engineering NTUA
Dia Gerontoudi Prep Center was recommended to me by a friend and, following his advice, I decided to arrange an appointment. From the very first moment of our meeting, Mrs. Gerontoudi inspired me with trust and confidence to achieve my goals.
Electra Athanasiou-Ioannou
Trainee Lawyer at Freshfields Bruckhaus Deringer, Paris / Georgetown Law School, General LLM, A.G. Levendis Foundation Scholarship / IADR Business Certificate-International Arbitration and Dispute Resolution Business Certificate / Law School of Athens / Arsakeio Psychikou / TOEFL 113
The TOEFL preparation period is not one to be taken lightheartedly. Just like the applications period for US top law schools. Both Dia and Thomas know this for a fact and are willing to prepare you- and arm you- with inspiration and persistence along the way.
Giannis Polykretis
PhD in Computer Science, Rutgers University NJ / Diploma in Electrical Eng. NTUA / GRE 167/159 / TOEFL 106
Choosing the preparation center for the GRE and TOEFL certifications was one of the most important in my academic life. And that’s because after 5 years when I was at a very high level due to the EMMY school of the NTUA, I had to go through a stage of competition again not in the narrow limits of Greece but on a global level.
George Karavas
Robotics Automation Engineer at SoftWear Automation, Inc, Atlanta / MS in Mechanical Engineering, Research Associate, Arizona State University / Mechanical Engineering NTUA / GRE 166/157, TOEFL 108
My experience with Dia Gerontoudi Prep Center was for the GRE and TOEFL exams and it was all positive both professionally and personally. I managed to get into one of the biggest universities in America, while I had positive responses from other universities of my choice.
George Kontoudis
PhD in Mechanical Eng.-Robotics Virginia Tech / Dipl. in Mechanical Engineering NTUA
At Dia Gerontoudi Prep Center I was able to get the knowledge and guidance to cope with the intricate application process of the US universities. Dia teaches effectively for a difficult exam. More precisely, she is well-prepared, explains clearly and makes difficult topics easy to understand.
Stefanos Altsitzoglou
Founder and Partner at Square One & Fitnesshood, Boston / Babson MBA Class ’19 / Maritime Economics, Pireaus University / GMAT 680
I feel very fortunate for having crossed paths with Dia Gerontoudi in my effort to prepare for the GMAT and TOEFL exams.
George Panagopoulos
Sales Finance, Twitter, NY / MSc in Financial Engineering NYU / BSc Bus. Economics and Finance AUEB
Dia Gerontoudi Prep Center contributed to achieve my goal, in the proper preparation for the required test, and in the editing of personal statements. Mrs. Dia with her extensive knowledge and valuable advice helped me make my dreams come true.
Valia Fragkou
Advisor to TIMA Charitable Foundation / MA in Arts Administration, Boston University / MBA in Entrepreneurship, Babson College / BSc in Finance NYU
In my private tutorials for the GMAT examination with Dia, I was able to ameliorate my writing skills and greatly improve my overall performance. I focused on my weaknesses and learned the underlining principles.
Prokopis Antonellis
Antonellis Dental Specialists Clinic, Athens GR / MSc in Prosthodontics, Baylor University, TX / Athens Dental School / TOEFL 118, GRE 163/158
Dia Gerontoudi’s Prep Center is THE place to go and prepare for the various examinations. The professionalism of Dia and her staff never fails to get the job done while the individualised approach to each student’s strengths and weaknesses guarantees that one’s full potential is unlocked.
Mario Ventiris
Master of Financial Economics, University of Toronto / BSc Economics AUEB (10%) / Entrepreneurship Management ACG-DEREE (SNF Scholar)
Choosing to continue your education and find the master’s degree which absolutely fits your future goals can be really challenging and sometimes chaotic. Thus, it is essential to have people by your side with the proper knowledge and a lot of experience to help you succeed.
Giorgos Kapoglis
Security Enginner II (Incident Response) at Verizon Media, San Francisco / MSc in Cybersecurity, Stevens Institute of Technology, New York / BASc Digital Systems Univ. of Piraeus
One of the best Preparation Centers in Athens. Friendly staff organized and very helpful. Helped me score high both on GRE and TOEFL exams. Also, they helped me build a strong personal statement and organize my CV.
Spyretta Aggeli
Data Scientist, Citi, NY / MSc in Management, Stevens Institute of Technology, New York / Diploma in Electr. Engineering, NTUA
Dia Gerontoudi Prep Center played a key role in my preparation for a master’s degree in the USA, after studying in NTUA. My preparation lasted about one year and I have worked closely with Dia Gerontoudi, Kostas Karalis, and Thomas Kalandranis.