- North West University
- University of Vienna
External person
- Ministry of Education
- Prince Sattam Bin Abdulaziz University
External person
- Ministry of Education, Saudi Arabia
- Prince Sattam Bin Abdulaziz University
- Ministry of Education
External person
- Wuppertal Research Institute for the Economics of Education
- University of Wuppertal
- Bielefeld University
External person
- Princess Nourah Bint Abdulrahman University
External person
- Southern Illinois University
External person
- Prince Sattam Bin Abdulaziz University
External person
- Prince Sattam Bin Abdulaziz University
External person
- Austrian Institute of Technology
External person
- Johannes Kepler University Linz
- Damanhour University
External person
- Ministry of Education, Saudi Arabia
External person