There is no such thing as directly entering the undergraduate course. Of course, all agents will tell you so. As long as you attend the preparatory course, you can enter the undergraduate stage. In fact, the preparatory course is nothing, especially some good public schools. The enrollment quota is very limited. After the preparatory course, you need to take a language test, and then take the results to think about applying for an undergraduate school. If the school thinks you are not bad, it will inform you to go for an interview and try something, and you will receive an admission notice if you pass. Moreover, non-French majors have to take language preparation courses, so it is impossible for any school to pass the language exam. The matriculation admission notice is the most useless, and the intermediary can only guarantee your matriculation, regardless of the future. Generally, as long as you apply for pre-admission, you will definitely apply, as long as you meet the conditions, so don't be fooled by the intermediary. Many students who failed in the language test after going there could not apply to the school, and failed in the exam for more than two years.