6 Structure of Matter 1 written tests are scheduled yearly, one in each of the following months: January, February, April, June, July, September.
Each written test consists of 4 structure-of-matter problems, loosely similar to those discussed during the exercises classes, and to those of past tests.
Students can pass the written test by solving correctly at least two (2) out of the 4 proposed problems, within the 2h30 allowed time.
Correct solutions in excess of 2 problems are useful to increase the final score (by up to 2/30), added to the oral score.
All records of successfully passing a written test expire after 12 months.