The core units of the Polish Academy of Sciences are research institutes, acting not only within their respective institutions, but also forming research agreements, consortia and networks, and working with the business sector as part of research centers. Out of the sixty-eight institutes of the Polish Academy of Sciences, over a dozen have been awarded the highest category A+ by the Committee for Evaluation of Scientific Units of the Ministry of Science and Higher Education, and thus are considered leading scientific and R&D centers, while eleven institutes enjoy the National Leading Research Center status. The Academy is a member of about sixty international organizations in the field of research and also cooperates with seventy foreign partner institutions. (For more information see PAN). The the Staszic Palace houses over a dozen scientific institutes and a few scientific societies. Alongside the Warsaw Scientific Society, which carries on the traditions of the historic Warsaw Society of the Friends of Learning, the Palace also houses the Polish Philosophical Society, the Polish Sociological Society and the Adam Mickiewicz Literary Society.
The PAN Archive in Warsaw, with branches in Poznań and Katowice, is also an auxiliary department of the Polish Academy of Sciences, located in the the Staszic Palace. The Archive is involved in providing information as well as collecting, storing, preserving and processing archival materials. The archival resources derive from the collections of the Polish Academy of Sciences (PAN), the Warsaw Scientific Society (Towarzystwo Naukowego Warszawskiego), the J. Mianowski Fund (Kasa im. J. Mianowskiego), the Polish Historical Society (Polskie Towarzystwo Historyczne), scientific institutions, legacies and scientific collections, and historical resources. (For more see the Statute of the PAN Archives). Among the auxiliary scientific units seated in the palace are also the libraries of the scientific institutes.
The PAN Department of Auxiliary Activities, located in the palace, is an organizational unit of the Academy; an institution responsible, including but not limited to, for the administration of the palace and other PAN properties, as well as for the PAN Houses of Creative Work in Jurata and Świnoujście and the Prophylactic Test Laboratory.