TJ prep on your schedule.

The course is best suited to students who are comfortable learning from written materials, completing work independently, and reviewing their responses using the tools provided.

It is intended for students preparing for the current admissions cycle, testing on January 9, 2027, with access through February 5th.

Students who need regular explanations, discussion, or help staying on track may benefit more from our small-group classes or private 1:1 tutoring.

No. The course includes written instructional materials, guided activities, review packets, practice exercises, and a full-length timed test on our online platform. Instructor feedback on the included full-length test is part of the course.

We suggest approximately 3-5 hours per week over 8 weeks. Some students will need more time, while others may focus on selected skills. Leave enough time to complete the full-length test, receive feedback, and work on the recommendations before the official assessment.

The course includes 55 SPS and PSE skill-building materials, including 38 guided SPS activities across 18 topic areas, plus 80+ math practice problems across seven topic areas.

Students also receive 10 SPS practice prompts, four PSE practice prompts, and one full-length digital practice test with personalized instructor feedback.

Additional practice tests are available for purchase.

An instructor reviews the included full-length practice test, as long as it’s submitted by January 3rd. Students review other activities using accompanying explanations, grading guides, or checklists. Feedback on individual practice prompts can be purchased separately.

Students receive a Google Doc containing their submitted responses, a checklist showing which elements of successful SPS and PSE responses they have included, and actionable, line-by-line comments. Feedback identifies strengths and explains how to improve areas such as reflection, supporting details, assumptions, and mathematical reasoning.

Each review covers one submission. Reviews of revised responses and follow-up questions in the document are not included. Students who would like to discuss their feedback with an instructor can contact us to arrange private tutoring.

Principia’s winter break runs from December 19 to January 2. To guarantee feedback prior to winter break, please submit any tests or prompts by December 14. Submissions entered after December 14 will be graded in the order they are submitted, but we cannot guarantee the typical feedback turnaround of 5 business days over winter break.

To guarantee feedback prior to the official TJ exam on January 9, please submit any tests or prompts by January 3.

For technical difficulties or questions about accessing the course, contact info@principiaeducation.com. If your student needs help understanding a concept or improving a particular skill, contact our team to discuss private 1:1 tutoring.

No. Students can follow the recommended study sequence or focus on individual topics. Course access ends on February 5th. To receive feedback before the official assessment, submit the included practice test by January 3rd.

After purchasing, families receive an email with instructions for setting up access to Principia’s online learning platform.

Access begins upon purchase and ends on February 5, 2027. After that date, students will no longer have access to the course materials or practice tests, and any unused feedback reviews will expire.

Families may contact Principia within seven days of purchase with concerns. Refund requests are reviewed on a case-by-case basis.