The doctoral school is responsible for all matters related to the doctorate. It brings together a set of research units grouped around a given scientific field. The doctoral school is responsible for recruiting, monitoring, training and defending doctoral candidates. It offers courses and scientific activities to doctoral candidates and validates each doctoral candidate's individual educational plan.
The main doctoral schools in AI can be found at the following link. Each doctoral school organizes a call for applications, typically open in spring of each year. Further details can be found on their respective websites.