Introducing Target Test Prep's In-Built Error Log!

👋 Hello GMAT Club members!

My name is Amaury Peniche, VP of Engineering at Target Test Prep. As the head of the tech team, I’ve introduced many new features and improvements to the TTP course so that our students can learn in more effective ways. Today, I would like to share with you one of my coolest projects at TTP: Target Test Prep’s In-Built Error Log.

First, let’s discuss why you don’t want maintaining an error log to become almost as much of a project as studying for the GMAT itself. Your error log is supposed to make your GMAT prep more efficient. So, if you’re spending a quarter or a fifth of your study time tracking errors and organizing data, the log isn’t really serving its purpose, right? 🤔

👉 For example, let’s say that each time you do focused practice of 100 questions on a topic, 20 of those questions end up in your error log. In GMAT quant alone, there are about 25 major topics — that brings you to 500 questions in your log already, and then there’s Verbal. So, an issue with old-fashioned error logs is that they can often end up being more work than the process of studying for the GMAT itself. Remember that tracking your errors is only half the battle. You then need to be able to easily review what your errors are and understand to what extent different errors are still affecting your GMAT performance. Scrolling through an ever-growing list of hundreds of rows in a spreadsheet is not the most practical or efficient way to get the job done.

Let’s now discuss the TTP way of logging errors!💡

The great thing about using the TTP error log is that all of the work of organizing your error data in an easy-to-read and highly usable format is done for you. A smart error tracker knows all of the most common mistakes that test-takers make, so it knows what questions to ask when you get a question wrong. For instance, in the TTP course, when you incorrectly answer a question, you can select a reason from a drop-down menu in the solution. So, the specific error is recorded in real time with the click of a button.

The TTP error tracker not only logs all of the questions you answer incorrectly and why you answered them incorrectly, but also tracks how often you make each type of error. So, if 25% of the time that you answer a question wrong, you do so because you fall for a trap, 18% of the time you run out of time to answer, 11% of the time you answer a question that is different from what is being asked, and so on, you have the data you need to proactively correct those tendencies and become a stronger, more accurate test-taker.


A TTP user can simply go into the TTP error log and click on the category “I did not understand the concept tested” to see each question missed for that reason, the solution to each question, and the chapters covering the concepts in those questions. Thus, the student knows exactly what to revisit in the course for further study.

Need a higher GMAT score for the business school of your dreams? For just $1, you can sign up for a full-access trial of TTP’s 5-star rated GMAT Quant course and pre-launch Verbal course. Sign up today!