From 1912 to 1914, Irène re-entered a additional orthodox mastering surroundings at the Collège Sévigné in central Paris from 1912 to 1914 and then onto the Faculty of Science at the Sorbonne. Irène scientific studies at the Faculty of Science had been interrupted by World War I. After the war, Irène returned to Paris to examine at the Radium Institute, which experienced been developed by her mother and father.