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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!

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Charis Karakatsanis

PhD student in Mineral and Energy Economics Colorado School of Mines / Mining and Metallurgical Engineer NTUA

Dia’s long experience in the field allowed her to create a really simple, successful and easy to follow preparation method for the tests. She has small tips for every single part of the exams that make it so easy to understand exactly what it is needed. I feel lucky I was her student during the preparation for my graduate studies.
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Jason Vratimos

BSc in Mechanical Engineering, Georgia Tech / SAT General and Subjects (Math and Physics)

We don’t meet specific and important people by chance, on the contrary we will meet them at some point in our life for some reason…
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Nicole Tamvaka

PhD in Biomedical Sciences, Mayo Clinic Graduate School / BSc in Neuroscience/Biophysics, Dickinson Class of 2020 / SAT General and Subjects: Math I and Physics

Mrs. Dia Gerontoudi taught me more than writing a good essay, understanding difficult words like “soliloquy” or “incarnated” and comprehending the most bizarre SAT texts. With her unique teaching style and top-notch material…
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Yannis Brokakis

BSc in Sports Management North Carolina Wesleyan College / Athletic Scholarship / SAT General and TOEFL

Dia Gerontoudi Prep Center is the best preparation center i have ever been. Friendly and professional staff in a really nice atmosphere, unique methods of teaching and helping to improve and level up my English.
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Vasilis Douzenis

Senior Manager, Economic Research at GSMA, London UK / MPhil Economics Cambridge / MSc London School of Economics (LSE) / GMAT 730 / BSc Economics Univ. of Warwick

Dia really took the time to get to know me and identified my strong suits and comparative advantages, in order to compose documents that captured my uniqueness and made me stand out. The wealth of supporting material utilized during the teaching process…
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Ismini Papaharalambous

Director of Operations and Marketing, Heracles Packaging SA, Athens GR / MBA Cambridge Judge Bus. School / Dipl. in Mechanical Engineering NTUA / GMAT 700

Choosing the right MBA can be quite tricky and the whole application process a real nightmare. Yet with the right people by your side everything can get a lot easier. I was lucky enough to make the right decision for my GMAT preparation.
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Apostolos Atsalakis

Co-founder & CEO at PNOE, San Francisco / MPhil in Nanotechnology Enterprise, University of Cambridge / SEMFE NTUA / GRE 165Q/150V and TOEFL 105

The year that you prepare yourself for your post graduate studies is a crucial step in your life. With the dedicated team working at Dia Gerontoudi Prep Center, your preparation is optimal and the feedback that you get during that time guides you towards your goal.
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Claire Sergaki

Trainee at Shearman & Sterling, Paris FR / MIDS LL.M. in International Dispute Settlement, Geneva / Athens Law School / BSc Economics Deree College / TOEFL 113 / 1st award 2016 (team coach) in International Dispute Settlement Competition organized by CILS, King’s College

Dia Gerontoudi Prep Center played a key role in my admission in many LLM programs across Europe and the US. For my TOEFL examination I prepared mainly with Dia Gerontoudi, who not only is an excellent teacher and professional but also an inspiring person.
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Μargarita Karkantzou

Trainee Solicitor at Linklaters, London, UK / Master of Corporate Law, University of Cambridge, Jennings Prize (For Academic Excellence) / Athens Law School / IELTS 8.5

Trainee Solicitor at Linklaters, London, UK / Master of Corporate Law, University of Cambridge, Jennings Prize (For Academic Excellence) / Athens Law School / IELTS 8.5
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Myrto Oikonomou

Teaching Associate, Oxford University / DPhil, MPhil in Economics, Oxford University / AUEB Economics / TOEFL 118, GRE 169/163

Studying for the GRE and TOEFL examinations can prove to be a very stressful and demanding experience. This is why every student should search for a prep center that goes beyond solving math and teaching how to memorize vocabulary.
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Stavros Michalopoulos

Associate at Cleary Gottlieb Steen & Hamilton LLP, Paris FR / Master in International Law and Legal Studies, Georgetown Legal Center / LLM University of Cambridge / Georgetown University Law Center

The LSATs are perhaps the hardest test a law student can ever take in their lives. In addition to being intellectually challenging, they are, as I like to call them “ a marathon run like a sprint”.
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Natalia Kokkala

Investment Banking Analyst at Bank of America Merrill Lynch, London UK / MSc International Finance, HEC Paris / NTUA Arch. Eng. / TOEFL 117 / GRE Q161/V165), Also accepted in MiM, London Business School (LBS

In Dia’s Prep Center I found exactly what I needed to prepare for my GRE exam, and a lot more beyond that.
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Ζoe Papaharalambous

Innovation Consultant, Partner, AETHON Eng. Consultants, Athens GR / CEO Ergmasin Deals PC, Athens GR / HEC-Paris MBA / / Diploma in Civil Engineering, Patras / GMAT 660

After my admission at the HEC-MBA September 2017, I reflected on who and what helped me to reach my target.
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Yannis Zisos

Account Technology Strategist at Microsoft, GR and CY / HEC-Paris MBA, MSc in Engineering & Economic Systems NTUA, Dipl. Electronics & Computer Engineering ΤUC

Dia’s Prep Center constitutes the Absolute Catalyst to Success. Dia, Thomas and Kostas are top quality charismatic instructors-mentors who offer a unique learning experience.Best choice to accomplish your goals. Strongly Recommended.
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Andreas Mastorakos

Innovation Associate at Fahrenheit 212, Paris FR / MiM HEC Paris – Grande Ecole / Diploma in Mechanical Eng. NTUA / GMAT 700

Pursuing your dreams is an ongoing adventure full of obstacles. During this effort I had the chance to be trained and guided by Dia Gerontoudi (Verbal Section), Thomas Kalandranis (Interview Preparation) and Kostas Karalis (Quant Section).
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Thomas Anastaselos

Co-Founder at Orderstate, Athens GR / HEC MBA (UCLA Exhange Program) / Electrical and Computer Engineering, Univ. of Patras

Studying for the GMAT with Mrs. Dia Gerontoudi turned out to be a rather amazing experience. Her method of learning was highly organized and systematic, allowing for maximum efficiency in the minimum of time.
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Dimitris Kofitsas

Vice President-Investment Banking at Goldman Sachs, London UK / MBA London Business School (LBS) / The Vodafone Group Foundation-Sir Christopher Gent Award / AUEB Economics

Dia Gerontoudi played a determining role in my being admitted into the MBA programme at London Business School, with a special award on top! Apart from the dramatic improvement in my GMAT (the Verbal Section climbed from 60% to 90%), and TOEFL scores
George-Shaheen

George Shaheen

Senior Manager, Operations & Development at Viking Cruises, BL, Switzerland / MiM, London Business School (LBS) / GMAT 720 / IELTS 8 / Production Eng. & Mgt TUC

Dia Gerontoudi was my private tutor for my GMAT preparation. It was a really stressful period for me because I was working full time at the moment and I had only one chance to score really high in the test because I was a late applicant for LBS.
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Avra Diamanti

Community Manager at Impact Hub Kings Cross, London UK / MiM London Business School (LBS) / AUEB Acc. and Finance

Dia Gerontoudi was my tutor for the GMAT and TOEFL test. She is an excellent professional, a motivating teacher and a great person. Her lectures were thought-provoking, her material extensive and easy to read and her methodology was, even within the context of the class, customized to each student’s abilities.
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George Zeritis

Co-Head of Business Development at ZERITIS GROUP / MiM, London Business School (LBS) / AUEB Acc. and Finance

At Dia Gerontoudi Prep Center, they) showed me the path to double up my verbal scores, coordinated my thoughts, edited my essays in a unique way, networked me with London Business School students – made me achieve my goals. The Best Prep Center in Greece by far!
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Maria Sarantopoulou

Speechwriter, European Commission, Brussels BE / MSc in Public Policy and Administration, London School of Economics and Political Science (LSE) / Media and Communication EKPA

When I joined the preparation centre of Dia Gerontoudi, I was searching for a prep center which would not only provide me the necessary knowledge for just passing the exams but a centre which would prepare me to integrate best into a university abroad and help me get a deeper knowledge on the tough studying programmes of a master’s degree at an international high level university.
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Apostolos Paradellis

Analytical Consultant for Greece, Bulgaria, Cyprus, Malta at Google, Athens GR / MSc in Finance, London School of Economics (LSE) / GMAT 690 / AUEB Management Science and Technology

Dia Gerontoudi Prep Center focused on my personal needs and way of thinking and helped me succeed both in my GMAT scores and my applications. However, my experience was much more than that.
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Konstantina Giannakopoulou

Future Trainee Solicitor at Watson Farley & Williamsm / LLB at London School of Economics (LSE) / AUEB Acc. and Finance

I prepared at the Dia Gerontoudi center for my law entry exam (LNAT), IELTS and my overall application for law schools. From the first moment, the whole team approached my case individually and with extra care.
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Mariza Bakogianni

Senior Manager in Commercial Planning, Piraeus Bank, Athens GR / MSc in International Employment Relations and Human Resource Management, LSE / Economics Univ. of Piraeus

I would highly recommend Dia’s professional, result oriented, highly structured and tailored to student’s needs work. She has successfully coached me throughout my planning for my graduate studies, beginning from the test exams preparation to effectively counseling
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Martha Georgakopoulou

Financial Planning Analyst, Mytilineos SA, Athens GR / MSc Accounting and Finance LSE / Business Administration AUEB

Dia Gerontoudi Prep Center has been a valuable help and the key to success while preparing for my GMAT and IELTS exams. The materials were well structured and the entire preparation was focused on my needs and weaknesses.
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Agis Petrovits

Learning Manager and Executive Coach, IMD Bus. School, Lausanne, CH / Founder, OHLIVE Me Artisans / IMD MBA in Lausanne / MSc in Construction Economics and Management, University College London (UCL) –Bartlett School of Graduate Studies / BEng Hons, Civil Engineering, Oxford Brookes Univ.

Dia’s input was key while I was looking to apply a systematic approach to the GMAT examination that is critical for obtaining a high score on the exam.
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Stella Seymeni

LLB Candidate Durham University / LNAT Grade 28

My LNAT tutoring sessions were very useful, from reading simulations to assumption exercises, it all helped boost my performance and receive an offer for my first choice university. My tutor Thomas Kalandranis was supportive, he noticed my weaknesses from the start and advised me on how to tackle them.
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Yannis Rossonis

Consultant at OC&C Strategy Consultants, London UK / MBA INSEAD / Mechanical Engineering UCL

Dia Gerontoudi Prep Center is a must when it comes to Grad School applications preparation. The Center is truly student focused – methodologies and tactics are customised according to each student’s strengths and weaknesses, forming the basis for success.
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Panos Patoucheas

LLM in International Civil and Commercial Law / LLB Queen Mary / Political Science, Athens Law School

Throughout my LNAT and IELTS preparation for the UK top law schools, both Dia Gerontoudi and Thomas Kalandranis supported me enormously to pursue my goal. For me, Dia Gerontoudi Prep Center is not only an excellent, professional and well-equipped prep center for studying abroad
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Eleni Antonakou

Associate at Watson Farley & Williams / LLM, Queen Mary University / Law School of Athens / IELTS 8

Dia’s teaching methods and organized learning along with her great vistas of knowledge makes IELTS preparation very easy and stimulating, too. Besides being an extremely intelligent teacher, she is an inspiration and a beautiful person, who provides not only typical knowledge but also moral training. Dia Gerontoudi Prep Center is an easy road to success!