The undergraduate admission to Polytechnique in the polytechnicien cycle is made through two ways: the first pathway which is a selective examination which requires at least two years of intensive preparation after high school in classes préparatoires, and the other pathway by following undergraduate study at another university.
Admission includes a week of written examinations during the spring followed by oral examinations that are handled in batches over the summer.

About 400 French nationals are admitted to the school each year.
Foreign students who have followed a classe préparatoire curriculum (generally, French residents or students from former French colonies in Africa) can also enter through the same competitive exam (they are known as "EV1").
Other foreign students can also apply for the polytechnicien cycle through a "second track" ("EV2") following undergraduate studies.
In total, there are about 100 foreign students admitted to this cycle each year.

Foreign students from other universities in Europe or the USA may also be accepted to study undergraduate courses as a exchange program at polytechnique for a semester or one year, without being part of the polytechnicien cycle.
The undergraduate admission to Polytechnique in the polytechnicien cycle is made through two ways: the first pathway which is a selective examination which requires at least two years of intensive preparation after high school in classes préparatoires, and the other pathway by following undergraduate study at another university. Admission includes a week of written examinations during the spring followed by oral examinations that are handled in batches over the summer.
About 400 French nationals are admitted to the school each year. Foreign students who have followed a classe préparatoire curriculum (generally, French residents or students from former French colonies in Africa) can also enter through the same competitive exam (they are known as "EV1"). Other foreign students can also apply for the polytechnicien cycle through a "second track" ("EV2") following undergraduate studies. In total, there are about 100 foreign students admitted to this cycle each year. 
Foreign students from other universities in Europe or the USA may also be accepted to study undergraduate courses as a exchange program at polytechnique for a semester or one year, without being part of the polytechnicien cycle.
École Polytechnique