Rüdiger gained a lot of experience and expertise to be a successful Business Leader of an International School by:
- Serving as Chair of the ECIS Finance Committee
- Serving as Member of the AGIS Board
- Serving as Chair of the AGIS Business Manager
- Serving as Member on the CIS Accreditation visiting Team in Kuwait and Basel
- Attending many workshops also as presenter at the ECIS/CIS/AGIS conferences
- Attending many workshops on labor law and works council issues