Welcome to TJ Test Prep!

Thomas Jefferson Sci/Tech HS Admissions
Provide quality, comprehensive TJ prep
at a fraction of the cost 

We are now offering a Math Bootcamp

TJTestPrep Math Bootcamp is a 2-day math workshop in which we will cover strategies for completing the math section of the TJ exams. We will cover problem-solving techniques, complex topics in math, and strategies for the Quant-Q.

The following topics will be covered in-depth:
1) System of Equations
2) Probability
3) Pattern Recognition
4) Combinatorics
5) Number Theory and Advanced Algebra
6) Geometry
7) Sequences and Series

The Bootcamp will span 2 days on August 8th and 9th be hosted in the morning for 4 hours each day (8AM-12PM). It will be hosted online via Zoom. There will be 2 instructors (TJHSST Alumni) to provide for adequate individualized instruction. We will cover each topic in-depth and then work through relevant practice problems step-by-step. The price of the Bootcamp will be $399.

Entrance Exam


Why Us?

Proven results: 113 students have taken our SIS/Essay Course and 81.4% have been admitted to TJ. This is the first year we are offering Round 1 preparation and are excited to provide you with quality practice exams.


Cost-effective: Most prep centers are in-person, focus on the wrong content, and range from $2,000-$15,000 per year. We charge only $15 per practice test (pay-as-you-go) and offer our SIS/Essay course for the low cost of $189. This includes unlimited access, several practice prompts, and instructional material hand-crafted by TJ Alumni. 

Comprehensive: Most test prep centers have two main issues. 

1) They ignore Round 2 of the admissions process. Many of our students have been admitted despite scoring 60-75% on the initial test. The SIS and Essay show admissions officers who you are and are your perfect opportunity to demonstrate your knowledge of STEM/TJ. 

2) They do not emphasize practice. Practicing individual concepts is important, but students must become accustomed to concentrating for 2-3 hours at a time in a proctored environment. We offer proctored practice exams that simulate the real test. Our motto is practice, practice, practice.


Experienced: We understand the ins and outs of admissions and TJ as a whole. We are run by recent TJHSST Alumni who were involved in a variety of extracurriculars and gained admission to top-tier universities.

Flexible: We don't require our students and parents to commit to months of ineffective in-person classes, which absorb weekends and prevent you from spending time with your kids. Our work is entirely remote, so you can practice anytime, anywhere. All you need is your laptop and brain!


100% satisfaction guarantee: If you don't like our product within 14 days, you get your money back.

Note: If your student is on free or reduced lunch, we are happy to provide financial assistance for our products and services.

Check out our blog

"Just wanted to update you that my son received an offer of admission to TJ this evening and was very happy about it :).  I wanted to also thank you again for your guidance and help in preparing for the SIS/Essay exam.  Your program, tips, feedback and responsiveness to questions was very helpful to him in organizing his ideas and thoughts and feeling comfortable and relaxed on the day of the exam so that he could do his best and demonstrate his abilities. "

~TJ Parent '24

"Hello, I just wanted to say thank you for working with [my son]. He completed the SIS yesterday. The muscle memory kicked in. He finished with 20 minutes to spare.  Regardless of how this process goes, going through those tests have been such a good experience for him...You guys were exactly what he needed these last 3 months!"

~TJ Parent '23

"The instructors' personalized feedback was what got me admitted to TJ. They are quick to respond and gave me very helpful comments which significantly improved my essays over the course of 2 months."

~TJ Student '20

"TJSISEssayPrep prepared me extremely well for the second round of the TJ Admissions process. In fact, two of the SIS prompts were very similar to the practice prompts from the course. I strongly recommend them to all prospective TJ students"

~TJ Student '21

Need more details? Contact us

Contact us at prep4tj@gmail.com for more information.

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