Where our students have joined


GMAT course | Q50

A lot of focus was on the conceptual understanding followed by practice questions which helped me achieve the score.

Shreyash Manikonda

SAT course | Math 790, English 710

The classes were to the point and very easy to follow. Also, lots of practice helped in fixing the proper exam strategy, thus improving the score. Sujoy sir and Sudeshna ma’am were always available to clear all doubts.

Pulkit Khanna

SAT course | Math 750, English 700

The classes taken by Sujoy sir and Sudeshna ma’am were very detailed and the concepts were explained very easily. There were lots of practice questions and mock tests too.

Anchita Mitra

SAT Course | Math 790

The classes by Sujoy sir were very informative and helpful. The concepts were discussed in depth and there were lots of mock tests which helped in fine-tuning the preparation.

Krithika Bhojanala

GMAT | UNC Kenan-Flagler

After practicing a lot and giving a lot of mocks I was only able to score Q47 in my GMAT for my first attempt. But, once I enrolled for Sujoy Sir’s classes, I could see a definite improvement. Not only did he clear out my concepts, help me solve harder questions, he taught me how to approach each question in order to save time during the exam. After his classes, I was able to score 710, with Q50. Thank you Sir!

Anchit Jalan

CAT course | IIM Kozhikode

Sujoy Sir’s unique way of teaching helped me out with my CAT preparation and I scored a 98.08 percentile which would not have been possible without him. He has the capability to bring out the best in every student

Pallav Chakraborty

CAT course | IIM Nagpur

Sujoy Sir’s guidance and all the help from Team CUBIX helped me convert IIM Nagpur on my first try at CAT in 2020. His able guidance and continuous mentoring has helped me a lot and I was able to convert IIM Nagpur along with a few other top B-schools. I can vouch that he is a great mentor and definitely recommend others to seek his guidance for the B-School preparations.

Tanjeet Singh Wadhwa


Excellent coach, highly flexible, in-depth knowledge of the subject, but firm and push you beyond boundaries so that you can excel in exams. I owe lot to him for preparing and pushing me so hard to crack entrance exams. Shall rate him10/10. Thank you

Ishani Das


Sujoy Datta was my mentor for SPJAT entrance exam. He taught me for about 10 classes and helped me crack the entrance. He is extremely patient and an excellent coach. I owe it to him!

Judhajeet Biswas

CAT course | IMT Ghaziabad

Sujoy Datta was my mentor for my MBA entrance test preparation – CAT 2021, SNAP 2021 and XAT 2022 from June 2021 to November 2021.

I’m happy to say that Sujoy’s proficiency in the subject and his amazing teaching skills went a long way in helping me with the preparations. His unique approach to teaching Quants and DI theories and breaking down the complex concepts to the fundamentals helped me grasp the study material fast. His self curated and self created question bank was an indisputable resource.

What truly sets him apart is the rare combination of his professionalism and friendly demeanor. When I decided to prepare for the dreaded CAT examination, Sujoy Datta was a clear choice for me. He is extremely approachable and treats every student with utmost care. Our classes were completely online but he made sure that it was no different from the warm environment of offline classes. His years of experience as a mentor really shines through his teaching and delivery.
I really benefited from his round the clock availability – be it 7am in the morning or 1:30am in the night – he was always a text away when it came to clearing doubts, be it conceptual or problem specific. Moreover, he was very accommodating and arranged for extra classes whenever we requested.

As an engineer, I was completely new to the LR-DI section of the CAT and I dreaded it.
However, the entire credit goes to Sujoy for turning my weakest area to my strongest ability, that too, just within a couple of months. Without his guidance, I doubt I would have achieved the 99.9%ile in LR in XAT’22.

He also guided me throughout the Personal Interview rounds. He was more than just a mentor, he shared my low moments, he was there when I doubted myself before the exams and he was also there to celebrate and share the joy when the admission offers arrived one after the other.
He has truly been an inspiration and continues to guide me through my career and life. I wish him all the very best for his future endeavors and happily recommend his services to anybody preparing for the CAT, GMAT and GRE exams.


GRE Quant course

Really competent and empathetic teacher that really helped me a lot with the quant section for the GRE, can highly recommend

Neal Gupta

ACT course | Math 33, Science 35

Sujoy Datta is one of the most experienced teachers I have met. He knows the tricks to master the ACT Math. Preparing with Mr. Sujoy helped me successfully excel my ACT. Also, the large number of ACT mock tests also helped me.


SAT | Math 760

Sujoy sir worked with me for my SAT math section. I was able to learn many new concepts and was able to apply the same.


PSAT course | PSAT 1340 (1520)

I am from USA and have been a part of the online PSAT program with Sujoy Kr Datta and Sudeshna ma’am. They helped me a lot by explaining the tough concepts and cleared my doubts.

Sanya Ahuja

SAT course | 700 E, 760 M (1460)

I am from USA and have been a part of the online SAT program with Sujoy Kr Datta. From my experience, Sujoy sir and Sudeshna ma’am are the best mentors for the SAT. I improved a lot from my previous attempt – thanks to them!

Surya Ramaraju

ACT classes | Math 33, Science 33

Amazing teacher very friendly and very motivating as well. He is always willing to help us and never neglect our problems.

Chahat Walia

CAT one-on-one | SPJIMR, IMT, NMIMS Mumbai

A great learning place if you are looking for CAT preparations – I was guided by Sujoy sir, he was immensely helpful in my preparation of quantitative aptitude, not only his teaching methods are unique but are also easily understandable. Alongside, sir is approachable at all times for clearing doubts and mentoring. I would highly recommend this institute to anyone preparing for MBA examinations.

Akshay Kala

GMAT (QA) one-on-one | Q50

Sujoy explains Math in a very simple way and makes solving math a lot of fun. His methods are logical, really efficient and useful. I completed the entire QA with Sujoy and he was instrumental in clearing all my doubts

Aditya Pugalia

SAT Classes | SAT 1490

Sujoy sir is an amazing teacher and makes complex topics seem very easy. Math is fun when he teaches

Jai Choraria

SAT Course | SAT 1450

A great mentor, a great friend, he made SAT classes really worth going. A great inspiration for all of us

Rohit Tarafder

ACT Classes | Loughborough University

It was a very pleasant experience. I could understand all the concepts that were taught to me in class.

Abhishek Jakhmola

CAT | IIM Indore

My preparation for CAT began in the month of September which was pretty late, at least I felt so. However, with the right guidance from Sujoy Sir, I was able to handle my weak areas well. His consistent motivation goes a long way in the CAT journey. It was the very dedicated mentorship of sir that assisted me in this endeavor.

Poulami Chakraborty

GRE | Ohio State University (full scholarship)

I found the technique of teaching very good, specially the ways that were taught to do sums quickly was really helpful. I was helped a lot in English with my vocab and RC, tests were often taken which helped a lot. Further, I even found the teaching environment pretty comfortable so that I could voice my doubts repeatedly even on the same topic and I was always helped. The timings were also very flexible. Overall, the classes really helped me a lot to perform well in GRE.

Sidharth Sethi

GMAT course | Q50

Best teacher for any competitive exam. Extraordinarily good teaching skills, always available for any doubts, spends quality time with students even after class hours and very helpful in clearing important concepts

Jahin Zaman

SAT one-on-one | 740 E, 790 M (1530)

I took SAT-Math with Mr. Sujoy and SAT-English class with Mrs. Sudeshna. Both of them are hardworking, punctual and sincere teachers. I liked the way they teach and learned a lot from them. Thank you so much from the bottom of my heart for your help!

Drew Meyer

GMAT QA one-on-one

When I started working with Sujoy, I was at 42. The day of our first meeting that I knew my search for the perfect quant tutor was over; I mean, the guy is a wiz. From the beginning of our sessions to my actual exam, Sujoy helped me improve from a Q42 to a Q49. Working with Sujoy was a huge confidence booster; he not only helped me with the tricks, tips, and tactics necessary to ace the Quant but also instilled in me the belief that I could actually improve. Having the right mindset is key when going into a high-stakes exam like the GMAT, and I was not worried or nervous at all while taking the Quant section because of the attitudes he instilled in me. Don’t waste your time looking for the right tutor. Just give him a call


SAT one-on-one

Sujoy worked with me for weeks to prepare for my SAT math section. I was able to learn more concepts and apply that learning. He is a good teacher to teach you new (and multiple) ways to solve problems. Also, he provides a lot of extra study materials and practice problems. 5 star if you want someone who responds quickly and teaches new tips

Mari Mkhitaryan

GMAT QA one-on-one

I have completed one-month course of GMAT with instructor Sujoy. This course enabled me to increase my score from Q43 to Q47 (even reaching to Q49 in my practice tests). The instructor also shared some tips and tricks to solve hard problems in an easier and less time consuming way. His customized study plan enabled me to concentrate on my weaknesses and improve my result. He also provided useful material to strengthen the acquired knowledge

Vedant Seksaria

SAT | University of Warwick

Mr. Kumar is one of the most experienced teachers i have met. He knows the tricks to master the SAT. Studying under Mr. Kumar helped me successfully excel my SAT. More than the SAT. He creates a student friendly environment providing a helping hand to students when and where they need

Aleena Chanda

GRE Course | Univ. of Nebraska

The math classes were quite helpful and the techniques taught by the teachers helped to solve the sums quickly. The English classes were also quite effective. Sir helped us understand the techniques for solving reading comprehension which became very useful . Also we learned a lot of new words which is a very important part of GRE. The class timings were quite flexible

Soham Majumder

CAT course | MDI, NITIE Mumbai

He is one of the best in the teaching industry when it comes to QA for MBA entrance examinations. He’s always there to help, whenever you need it. His methods and techniques are absolutely precise and apt for being able to bell the QA section in any MBA entrance exam

Victor Bose

CAT course | XLRI, NMIMS

One of the best teachers anyone can have. Always made sure that we understood a concept behind a sum completely. Sir was forever ready to clear doubts irrespective of what time it was. Best of all, the questions sir can conjure on the spot is beyond compare

Anmol Agarwal

CAT course | IIM Shillong, IMI

Sir has an excellent knowledge of the CAT course and is very thorough with the preparation. He guided me throughout the whole process including the college selections. Thank you Sir!

Debmalya Dutta

CAT course | IIM Ranchi

Easily, amongst one of the very best in his trade. He has mastered the art of mathematics beyond excellence, and will always be willing to share his wealth of experience with you. No matter which level you belong to, trust him to have a strategy for you to excel. He will go out of his ways to help you out. I often used to seek help on concepts at odd hours of the day, and he almost always came up with a response within minutes. The result was that my percentiles got a boost

Lakshita Sharma

SAT Math course | Math 760

I took classes for SAT math for over 6 months and every class in that period was super helpful. I was able to improve my score and learn new techniques that worked best with my personal learning style. Even though I was taking classes internationally, the time was suited to what works best for me, and I was able to ask questions at any point and receive a quick reply. I would highly recommend for SAT prep

Rakhi Raizada

GMAT course | ISB

Sujoy Sir has trained me for MBA entrance examination. He is one of the best teachers I have come across. The pedagogy which he follows is superb, making sure the student understands the underlying logic of the subject instead of just mugging up the things. I received his full support at every stage of my preparation. It was a wonderful experience. The pedagogy followed is superb. My hearty thanks to the entire team for helping me in achieving my goal that is converted ISB. A big yes to Sujoy sir!

Chandana Veluri

Daughter attended SAT course

If you are a parent like me in the US and are wondering if Indian standards of English teaching will meet your child’s needs, you are not alone. I was skeptical too. But my experience with this institute proved me otherwise. My son is in 9th grade at a public school system in the US. He took the English PSAT/SAT prep Course over summer and it gave him a good head start. Sudeshna ma’am’s teaching style was very likable to my child. She provided timely feedback. I appreciate the flexibility she showed in rescheduling some classes as needed for us. The material and resources provided were of good value too. To me, this is much more greater value than say signing up for a group class in one of the online well known curriculum’s like Princeton or Kaplan prep because of the one on one focus.

Ravin Kapoor

Son attended SAT course

Thank you for making my son ready for SAT exam. I would like to highly recommend Sujoy and his team for our fantastic coaching experience. We live in USA CA and looking for good coach who can teach mathematics to our son Aradhya. We were fortunate to connect with Sujoy and really happy with the progress. He and his team is dedicated in making learning part of students with focused practical approach. Very discipline and punctual which enhanced learning experience – highly recommended and keep it up!

Shalaka Wikhe

GRE course

Sujoy sir is an extremely great teacher. He is highly motivating and had answers to any question asked. His way of teaching concepts is very innovative and easily understandable. I highly recommend Sujoy sir for competitive exams

Anshul Kakkar

GRE course

I took my GRE Classes from here. The classes were very helpful in understanding the core concepts. The overall experience was awesome. It wasn’t just a class but an interactive session. He explains the concepts very well in a way that is understood without any difficulty.


CAT course | NITIE, IIM A, IIM K

Joined here for the preparation for CAT. Awesome teachers and their techniques. Loved the way they taught and always present when had a doubt. 5star for their efforts made. Thank you

Shankha Mukherjee

CAT course | IIM Ranchi

Experienced faculty with varieties of math tricks. He changed the way I looked at mathematics and mathematical aptitude questions

Alisa Basak


I have received a lot of learning from the mentors. They have been extremely helpful and always showed the right part to ace the target. The continuous guidance helped me to convert SCMHRD, IIM Ranchi, XIMB, Tapmi, KJ Somayia, SIIB, SIBM Bangalore, GreatLakes Chennai

Fahad Taslim

CAT course | CAT 99.84 | IIM Calcutta

He’s probably the best teacher in Kolkata. If you really want to rise above the mediocrity, he is the one to consult. The concepts are not done in an ordinary way because that is not the point of competitive exams. He carries rich experience and even richer aptitude.

Shreyan Gupta

GMAT one-on-one | GMAT 730 (Q50)

Owing to Mr. Sujoy Kumar Datta’s meticulous teaching technique and focus on the basics, I was able to score a 730 in the GMAT Examination with sectional break-up of Q50 and V39. He has definitely filled in my gaps of concepts and has changed my strategy of attempting questions. I am indebted to him

Gopal Mundhra


He’s probably the best quant teacher in Kolkata. If you really want to rise above the mediocrity, he is the one to consult. The concepts are not done in an ordinary way because that is not the point of competitive exams. He carries rich experience and even richer aptitude.

Hrishav Roy

CAT course | Symbiosis

I prepared here for the last 6 months to CAT and had a wonderful experience. Very caring and experienced teachers here. Loved the way they taught and would recommend all to join for the preparation. Teachers always available for solving the doubts. All the best.

Ahana Batabyal

CAT course | SIBM

Sujoy sir is a very good teacher. He explains really well and is always available for any doubts we have. All the teachers are very supportive and dedicate a lot of time to all the students and make sure we do really well.

Subhro Jyoti Hazra

GMAT 720
USC Marshall

Mr. Datta was my mentor during my GMAT prep and he is truly a great mentor. I would recommend that anyone thinking about GMAT should at least attend one of his Quant classes. His approach is simply brilliant. I wish him all the success 


SAT Math 790

The teachers are very helpful, and thrives for students to reach their highest potential. Mr. Datta was immensely helpful in preparing my daughter for SAT Math section. She got the highest SAT Math score of 790

Pragya Bhayana

ACT 34

Tutoring classes for ACT Math were very helpful and the techniques taught were useful. Lots of short-cut methods were discussed. I improved my score to 34. I would definitely recommend the classes!

Samrat Bose

GMAT 720
ESMT Berlin

The best persons to contact for GMAT success – Sirs were responsible for guiding me through study materials and mock tests to increase my score from initial Mock-test results of 600 to a GMAT score of 720 (Q-50 V-38). He is great at conveying complex concepts in manageable chunks of information.

Subharghya Mitra

GMAT 730

The VA classes by Sanjay Vasa sir helped me to improve my VA score. Also, the materials and support provided were excellent

Amrit Sharma

Simon Business School – GRE 320 (170 QA)

The GRE course is tailored according to student needs. The top-notch faculty (they addressed my doubts even at 2 AM) & extensive problem bank made the GRE a cakewalk

Neel Deorukhkar


One of the most talented individuals I’ve come across, Sujoy is a great teacher and has the solution to almost any Quant question that I put forward. I particularly liked his teaching style – He didn’t give answers out easily and made you think till you were able to get the solution on your own. He constantly motivated and encouraged me during my GMAT prep. I’d recommend Sujoy to any taking the GMAT. It was a pleasure learning from you!

Jayati Saha

Univ. of Minnesota

Sujoy is very knowledgeable and knows the GRE exam inside-out. He was persistent and motivated me to do well in the test

Anhad Sadana

Auburn University

Sujoy is one of the most dedicated and patient tutors, puts in lots of effort and keeps motivating – this approach helped he a lot for my GRE

Indushree Banerjee

TU Delft, Netherlands

I had prepared myself and despite knowing the syllabus, I was unable to increase my speed. In only 1 month, he helped me achieve 162/170 in Quantitative. Had I been under his supervision for more than 3 months I am sure to have achieved near perfect scores. He is extremely friendly and helpful – he has the perfect tricks and techniques that helped me boost up my speed and maintain accuracy

Anomitra Banerjee


Sujoy Sir was instrumental with the fundamentals of Quant in GMAT leading to me getting a full score. When I started with Sujoy sir, I was at 46. Sujoy sir put in a lot of effort and made me practice the tough sums as he knew being an engineer I would easily do the medium ones. I would wholeheartedly recommend him to any GMAT aspirant

Sohni Chakraborty

Univ. of St. Andrews

Being an English Literature student, the very thought of doing math for GRE was extremely scary. Sujoy is extremely patient and identifies your weaknesses very well. He taught me things in context, explaining the smallest of details so that I could understand the logic. He is well aware of the GRE pattern – I would strongly recommend him. I don’t think I would have been able to crack the GRE without his guidance and support


CAT course | NMIMS

It all started in the month of when I went over to discuss the whole preparation scene and I was instantaneously overwhelmed by Sujoy sir’s approach. Since then I’ve been taking regular classes and mocks. I’ve found the teaching approach and mocks really helpful. All of the teachers have been really supportive throughout the whole process.