--- title: Team url: "https://www.zib.education/en/team/" date: 2022-06-07 modified: 2026-01-09 lastUpdated: 2026-01-09 --- # Team On this page ZIB executive board --------------------- The ZIB executive board defines the strategy of the centre, decides on key research projects, and represents the ZIB in the scientific community as well as public sphere of educational policy. - ### Prof. Dr. Samuel Greiff Chairman of the Board, Director and National Project Manager PISA | TUM [](mailto:samuel.greiff@tum.de) [ Show profile ](https://www.zib.education/en/team/prof-dr-samuel-greiff/) - ### Prof. Dr. Frank Goldhammer Vice Chairman of the Board | DIPF [](mailto:f.goldhammer@dipf.de) [ Show profile ](https://www.zib.education/en/team/prof-dr-frank-goldhammer/) - ### Prof. Dr. Olaf Köller Board Member | IPN [](mailto:koeller@leibniz-ipn.de) [ Show profile ](https://www.zib.education/en/team/prof-dr-olaf-koeller/) - ### Prof. Dr. Petra Stanat Board Member| IQB [](mailto:iqboffice@iqb.hu-berlin.de) [ Show profile ](https://www.zib.education/en/team/prof-dr-petra-stanat/) Direction of funding programmes and management ------------------------------------------------ Management implements the strategic guidelines set by the executive board, coordinates operational activities, and ensures the efficient execution of international comparative studies. - ### Tobias Sälzer Head of the Umbrella Project and Managing Director | TUM [](mailto:tobias.saelzer@tum.de) [ Show profile ](https://www.zib.education/en/team/tobias-saelzer/) Working group TUM/PISA (Munich) ------------------------------- The TUM/PISA (Munich) working group at ZIB coordinates the implementation and scientific analysis of the PISA surveyin Germany. It develops test concepts, evaluates data, and provides provides robust insights into and an international comparative perspective on educational research. ### Leadership - ### Prof. Dr. Samuel Greiff Chairman of the Board, Director and National Project Manager PISA | TUM [](mailto:samuel.greiff@tum.de) [ Show profile ](https://www.zib.education/en/team/prof-dr-samuel-greiff/) - ### Dr. Jennifer Diedrich Deputy National Project Lead PISA | TUM [](mailto:jennifer.diedrich@tum.de) [ Show profile ](https://www.zib.education/en/team/dr-jennifer-diedrich/) - ### Dr. Lena Söldner Interim National Team Lead & Research Associate | TUM [](mailto:lena.soeldner@tum.de) [ Show profile ](https://www.zib.education/en/team/prof-dr-samuel-greiff-1/) ### Project administration - ### Annika Hoffmann Secretariat and Administration | TUM [](mailto:annika.hoffmann@tum.de) [ Show profile ](https://www.zib.education/en/team/dr-jennifer-diedrich-1/) - ### Elisabeth González Rodríguez Project Administration, General Management, and International Communication | TUM [](mailto:elisabeth.gonzalez@tum.de) [ Show profile ](https://www.zib.education/en/team/elisabeth-gonzalez-rodriguez/) ### Science communication - ### Jacqueline Kluge Research Associate | TUM [](mailto:jacqueline.kluge@tum.de) [ Show profile ](https://www.zib.education/en/team/jacqueline-kluge/) - ### Sophie Seßler Research Associate | TUM [](mailto:sophie.sessler@tum.de) [ Show profile ](https://www.zib.education/en/team/sophie-sessler/) - ### Dr. Verena Möller Research Associate | TUM [](mailto:v.moeller@tum.de) [ Show profile ](https://www.zib.education/en/team/dr-verena-moeller/) - ### Dr. Maria Katharina Muster Research Associate | TUM [](mailto:maria.muster@tum.de) [ Show profile ](https://www.zib.education/en/team/dr-maria-katharina-muster/) ### Data management - ### Dr. Lisa Teufele Research Associate | TUM [](mailto:lisa.teufele@tum.de) [ Show profile ](https://www.zib.education/en/team/dr-lisa-teufele/) - ### Dr. Philipp Sterner Reserach Associate (data management) | TUM [](mailto:phillipp.sterner@tum.de) [ Show profile ](https://www.zib.education/en/team/dr-philipp-sterner/) ### Research associates - ### Ainhoa González Uriarte Research Associate | TUM [](mailto:ainhoa.gonzalez-uriarte@tum.de) [ Show profile ](https://www.zib.education/en/team/ainhoa-gonzalez-uriarte/) - ### PD Dr. Amory Danek Research Associate | TUM [](mailto:amory.danek@tum.de) [ Show profile ](https://www.zib.education/en/team/dr-jennifer-diedrich-2/) - ### Ana Tupac-Baier Research Associate | TUM [](mailto:ana.tupac@tum.de) [ Show profile ](https://www.zib.education/en/team/ana-tupac-baier/) - ### Maren Müller Research Associate | TUM [](mailto:mar.mueller@tum.de) [ Show profile ](https://www.zib.education/en/team/maren-mueller/) - ### Martina Heinle Research Associate | TUM [](mailto:martina.heinle@tum.de) [ Show profile ](https://www.zib.education/en/team/martina-heinle-2/) - ### Dr. Tamara Kastorff Research Associate | TUM [](mailto:tamara.kastorff@tum.de) [ Show profile ](https://www.zib.education/en/team/dr-tamara-kastorff/) - ### PD Dr. Sittipan Yotyodying Research Associate | TUM [](mailto:sittipan.yotyodying@tum.de) [ Show profile ](https://www.zib.education/en/team/pd-dr-sittipan-yotyodying/) - ### Henrike Elmers Research Associate | TUM [](mailto:henrike.elmers@tum.de) [ Show profile ](https://www.zib.education/en/team/henrike-elmers/) Working group DIPF (Frankfurt) ------------------------------ The DIPF working group at ZIB focuses on methodological development and quality assurance for international comparative studies. It analyzes educational data, develops survey instruments, and supports the scientific interpretation of results. - ### Prof. Dr. Frank Goldhammer Vice Chairman of the Board | DIPF [](mailto:f.goldhammer@dipf.de) [ Show profile ](https://www.zib.education/en/team/prof-dr-frank-goldhammer/) - ### Astrid Henkel Project Assistant | DIPF [](mailto:a.henkel@dipf.de) [ Show profile ](https://www.zib.education/en/team/astrid-henkel/) - ### Dr. Leonard Tetzlaff Research Associate | DIPF [](mailto:l.tetzlaff@dipf.de) [ Show profile ](https://www.zib.education/en/team/dr-leonard-tetzlaff/) - ### Helena Feldhege Wissenschaftlicher Mitarbeiter | DIPF [](mailto:h.feldhege@dipf.de) [ Show profile ](https://www.zib.education/en/team/helena-feldhege/) Working group IPN (Kiel) ------------------------ The IPN working group at ZIB focuses on content design and test development in international comparative studies. It researches competence measurements in STEM subjects, analyzes educational data, and contributes to the further development of empirical educational research. - ### Prof. Dr. Olaf Köller Board Member | IPN [](mailto:koeller@leibniz-ipn.de) [ Show profile ](https://www.zib.education/en/team/prof-dr-olaf-koeller/) - ### Prof. Dr. Oliver Lüdtke ZIB-Professor | IPN [](mailto:oluedtke@leibniz-ipn.de) [ Show profile ](https://www.zib.education/en/team/prof-dr-oliver-luedtke/) - ### Dr. Alexander Robitzsch Research Associate | IPN [](mailto:robitzsch@leibniz-ipn.de) [ Show profile ](https://www.zib.education/en/team/dr-alexander-robitzsch/) - ### Oskar Engels Research Associate | IPN [](mailto:engels@leibniz-ipn.de) [ Show profile ](https://www.zib.education/en/team/oskar-engels/) Working group FDZ at IQB (Berlin) --------------------------------- The FDZ working group manages the research data center, which processes and provides educational data from international comparative studies. It ensures access to high-quality data for scientific research and supports its analysis. - ### Prof. Dr. Petra Stanat Board Member| IQB [](mailto:iqboffice@iqb.hu-berlin.de) [ Show profile ](https://www.zib.education/en/team/prof-dr-petra-stanat/) - ### Dr. Aleksander Kocaj Head of Research Data Center | FDZ [](mailto:a.kocaj@iqb.hu-berlin.de) [ Show profile ](https://www.zib.education/en/team/dr-aleksander-kocaj/) - ### Dr. Benjamin Becker Research Associate | FDZ [](mailto:b.becker@iqb.hu-berlin.de) [ Show profile ](https://www.zib.education/en/team/dr-benjamin-becker/) - ### Dr. Janine Buchholz Research Associate | FDZ [](mailto:janine.buchholz@iqb.hu-berlin.de) [ Show profile ](https://www.zib.education/en/team/dr-janine-buchholz/) - ### Monika Lacher Management Assistant | FDZ [](mailto:monika.lacher@iqb.hu-berlin.de) [ Show profile ](https://www.zib.education/en/team/monika-lacher/) - ### Nikolas Weigt Research Associate | FDZ [](mailto:nikolas.daniel.weigt.1@iqb.hu-berlin.de) [ Show profile ](https://www.zib.education/en/team/nikolas-weigt/) - ### Ralf Seifert Technology and User Support | FDZ [](mailto:ralf.seifert@iqb.hu-berlin.de) [ Show profile ](https://www.zib.education/en/team/ralf-seifert/)