text: → To enter the First year:
  - The school recruit essentially with the «Concours Communs Polytechniques» (CCP) or the DEUG (which are national competitive exams).
  - The admission could also be done by an interview with a License 3 in Chemistry or in Physics at the university, a DUT (university diploma of technology) for example, in Chemistry,  physical measurements optional materials or chemical engineering.
  - For international students, they must have a Bachelor of science or an equivalent foreign degree.
  - After 2 years in CPI classes at Rennes (ENSCR), Lille (ENSCL), Clermont-Ferrand (ENSCCF) or in Strasbourg (ECPM: referred to the CPI classe's paragraph).
  → To enter the Second year, students can have access at the ECPM having an interview, with a Master M1 in Physics with a speciality in Polymers or materials.
  → Admission to the CP2i class in the ECPM, after the Baccalaureate, or an equivalent foreign degree for the international students.
  There is no competitive exam, but every student should submit their school results. Then there are interviews to evaluate the motivations with the people in charge of the Chem.I.St programme. Approximately 50 students are selected every year. There are nearly 20% international students.