Global Change LLC was established in 2014 as one of the earliest education companies specializing in teaching English by applying information technology. We are also a pioneer in developing high-quality, online training programs for adults, helping them prepare for standardised tests such as TOEFL iBT, IELTS, SAT, GMAT, GRE, TOEIC, B1, and B2. Besides, we are very active in participating in charities, helping the poor and poverty alleviation.
About the founder of Global Change LLC: Mr. Hiep Nguyen or “Duy Hiep”

Nguyễn Duy Hiệp, known as “Duy Hiệp”, is an IELTS instructor in Hanoi. He came from College of Technology, HNU, class 2009 and got an MBA from WKU, USA, class 2013. He has been teaching IELTS since October 2013, and his teaching style is quite unique and inspiring.His mission is to inspire English learners through his lectures, so they can have a great source of inspiration to gain their confidence and start their own ways of conquering English language.

Summary of his general information:

  • College of technology, NU, Hanoi, class 2009.
    • Bachelor in Information technology-Software Engineering
  • Gordon Ford College of Business, WKU, US, 2013.
    • Master of Business Administration (MBA)
  • Highest Language Achievements:
    • TOEFL iBT 110 (Test of English as a Foreign Language)(R. 29, L. 28, S. 26, W. 27) ~ IELTS 8.0-8.5
    • GMAT 730 (Graduate Management Admission Test) (Q. 51, V.40) (AWA 6) (rank < 1 percentile in math, < 10 % in verbal)
  • GPA: 4.0 (Highest possible)
  • In the President’s List
  • Member of the International Honor Society for business called Beta Gama Sigma.
  • Work as a Graduate Assistant (GA) for the MBA Office.


IELTS-Duy Hiệp 9.0 IELTS-Duy Hiệp 9.0