TST PrepTST Prep is an online-based language test solution platform designed to provide an interactive learning environment for students who need to prepare for the TOEFL, Duolingo English Test, and general English fluency. Our student-centered approach not only provides test strategies and score building practice activities, but also a community-driven learning environment where teachers are always accessible and fellow test-takers support you every step of the way to your dream score.
TST Prep (tstprep.com) has 234 customer reviews on Five Star Index, with an average rating of 4.9 out of 5.
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Education Services · Washington, District of Columbia
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Education Services · Colorado Springs, Colorado
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Education Services · Harrisburg, North Carolina
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Education Services · Rockville, Maryland
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Showing 3 reviews with 1 star · Clear filters
Mo R.
Very bad interactive environment. I think an Intern write their software, it is full of bug, glitches. Speaking section stuck in between questions
Response from TST PrepFeb 9, 2026
Hi there. I am sorry to hear about your experience. We are always striving to be better. We will continue to work on the site and improve it based on your feedback.
Olga Y.
I have already spent 30 min of my time to uncover promissed key answers on your website ... Scam???
Response from TST PrepDec 27, 2025
Hi Olga. I am sorry to hear about your trouble. I am not sure which answer key you are referring to. If you could send me an email at [email protected] I will help get you the answer key. If it is from one of our free YouTube tests online, you can send me the link so I know which answer key to send you. Also, all of the answers are in the YouTube video description as well. I know you must be frustrated, but a 1-star review and accusing us of being a "scam" seems a bit unfair.
Pramila K.
I like to practice more question from tst because it makes me feel confident and practically thinking logically solve the each and every question. For scoring high marks as much as possible.
Response from TST PrepNov 19, 2023
Hi Pramila. I am sorry, but, could you clarify why you are giving us a 1-star review? This is an awful score and I would like to understand why so we can improve.