Propella and Principia Knowledge Academy have teamed up to provide professional and specialized advice on standardized TOEFL and SAT exams.

Principia Knowledge Academy provides tutoring in Costa Rica to students seeking to improve their school performance.

SAT Exam:

All those interested in studying in the United States should take this admission exam, since it is required for practically all universities in the United States.

It is a test that tests reading, writing, grammar, and math. All in English.


The TOEFL is a test that measures fluency and knowledge in the English language.

Personalized tutoring

Flexible Schedules

Preparation Exams