There are many local organizations which help students locally to prepare them to join the Grandes Ecoles in France. 
Here is the list of referenced organisms by Join a School in France: 

Based in West Africa, in Ivory Coast, in Senegal and in Camroon soon, TgMaster was created in 2013. The mission of TG Master is to motivate and accompagn to success all Africans who want to join the best Business Schools in France by mentoring and coaching for the main tests such as Tage Mage, GMAT, TOEFL or TOEIC. 
Thanks to its "Blend Learing" approach, TgMaster counts more than 200 admitted in the best Frencg Schools including 15 at HEC Paris, 84 at emlyon business school, 33 at ESCP Europe, 72 at Audencia, 49 at Skema Business School and more. 

Coaching for: 
- Application process
- Aptitude tests for Business Schools (Tage Mage, GMAT...)
- Aptitude tests for the English level (TOEIC, TOEFL...)
- interview simulations in front of a jury board  

Each year, the coaching period is from August to June. 

Information & contacts : | +225 58 47 22 22 | | Whatsapp