---
title: Dr. Aleksander Kocaj
url: "https://www.zib.education/en/team/dr-aleksander-kocaj/"
date: 2026-01-08
modified: 2026-01-26
lastUpdated: 2026-01-26
---

# Dr. Aleksander Kocaj

Dr. Aleksander Kocaj
====================

Head of Research Data Center | FDZ

 Dr. Aleksander Kocaj has been head of the Research Data Center (FDZ) at the IQB in Berlin since April 2024. His research focuses on topics such as assessing the skills of students with special educational needs in large-scale assessments, as well as replication, reproduction, and secondary data analysis.

[More about Dr. Aleksander Kocaj](https://www.iqb.hu-berlin.de/de/institut/ueber-uns/personen/fdz/5/)

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        <a.kocaj@iqb.hu-berlin.de>

    FDZ, Berlin

  ![[Translate to English:] Profilfoto Aleksander Kocaj](https://www.zib.education/_assets/processed/9ov-BbFwtyNfS4OxR-PC2TzLSHqwxjlEpg-rl5oVYBM/q:85/c:437.75284090909:270.2178030303:fp:0.49857954545455:0.48347107438017/rt:force/w:438/h:270/fn:Y3NtX0FsZWtzYW5kZXJfS29jYWpfOTE1ZGRmM2U5Ng:t/cb:f1060b65d9ffec0194937161cc46a9e4a6f0eda3/bG9jYWw6L2ZpbGVhZG1pbi9CaWxkZXIvTWl0YXJiZWl0ZXIvSVFCL0FsZWtzYW5kZXJfS29jYWoucG5n)