One-on-One online classes for GMAT GRE SAT ACT CAT


Classes are completely one-on-one or maybe two-on-one (you and your friend) - feel free to ask questions and interact


Classes are scheduled as per your convenience; the course plan is made depending on your exam target date


Pay for a minimum number of sessions and top-up once the purchased hours have been exhausted - no need to pay at once​


Get all necessary practice materials to reinforce what you learn in the sessions - materials graded as per difficulty levels


Feel free to record the entire session so that you can watch whenever you want to, as many times you want to

Continuous support

Unlimited Doubt-clearing on the go - after sessions and also over WhatsApp - stay connected with the mentors 24 x 7


Sujoy Kr. Datta


Eight time CAT 99.5+ percentile holder with GMAT Q51 (740)

Over a span of 13 years, he has mentored over 8000 students for CAT, GMAT, GRE, SAT and ACT. An IIT-ian, & a DAAD Scholar, he completed his Masters in Germany. 

He makes sure that students understand all the concepts. In standardized tests like GMAT, GRE, SAT, ACT & CAT, memorizing formulae doesn’t help in any way. Focusing on concepts and applying the concepts is what is necessary to be able to excel in these tests. His sessions are designed in a way that ensures the above. 

He has successfully mentored students from USA, Brazil, Australia, Bahrain, UAE, Dubai, South Korea, Nigeria, Austria. His students have made it to the IIMs, ISB, Ohio State Univ., Imperial College, XLRI, FMS, to name a few. 

Sujoy Kumar Datta

Sanjay Vasa


Mentor for Verbal Ability and GD-PI-WAT with over 14 yrs’ exp

He is one of the best mentors for the Verbal Ability section of the GMAT, GRE, SAT, ACT and CAT.

He has innovative ways of making students learn vocabulary, the most important area for the GRE. He is great with Critical Reasoning (GMAT) and provides great insights on the same in his sessions; learning Reading Comprehension & Sentence Correction from him is a breeze. For the SAT and ACT, he has thorough knowledge about the exam formats and prepares the students accordingly. 

He has trained over 8000 students for Verbal Ability for the above examinations. 

Sanjay Vasa

Frequently asked questions

PrepBrew, brought to you by CUBIX, is an online portal for one-on-one personalized classes for GMAT, GRE, SAT, ACT and CAT. Enjoy from the comfort of your home, over a cup of tea/coffee, sessions conducted live by the same top-notch faculty members of CUBIX

You may reach out to Mr. Sujoy Kr. Datta on +91 9433063089 (call / text / WhatsApp) or email him at and mention your learning requirements

Yes. You may book a one-hour demo for the subject you wish to enrol. To book the demo class, you may contact Mr. Sujoy Kr. Datta on +91 9433063089 (call / text / WhatsApp) or email him at and mention your requirements

Classes are conducted on At the time of the class, a meeting ID would be messaged to you (text / WhatsApp), using which you can join the session. You need to ensure a good internet connection and a proper audio connection (microphone and speaker) in your laptop. You may also login from your mobile. 

Yes. The sessions can be recorded at your end. The recorded videos would be saved in your local computer (My Documents – Zoom) from where you may watch the videos as many times as you wish to. Please note that recording facility is not possible if you login from your mobile. 

Our clients say

One of the most talented individuals I've come across, Sujoy is a great teacher and has the solution to almost any Quant question. I particularly liked his style - He didn't give answers out easily and made you think till you got the solution. He constantly motivated me during my GMAT prep. I'd recommend Sujoy to any taking the GMAT!
The institute is very helpful, and thrives for students to reach their highest potential. Especially, Sujoy Datta, he was immensely helpful in preparing my daughter for her SAT. His technique was very good; he pinpointed my daughter’s weaknesses and helped her improve on them. He helped her attain the highest SAT math score of 790. I definitely recommend them.
Tutoring classes for ACT Math were very helpful and the techniques taught were useful. Lots of short-cut methods were discussed. All the topic areas were covered and concepts were well explained. I did not have to memorize any formulas! I improved my score to 34. I would definitely recommend the classes to everyone!
I found the teaching techniques, specially the short-cuts, very helpful. I was helped a lot in English with Vocab and RC. Tests were often taken which helped a lot. The teaching environment was very comfortable; I could voice my doubts repeatedly and I was always helped. The timings were flexible. Overall, the classes helped me a lot to perform well in GRE.
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