Between 1924 and 1927, individual chaluzim from the Jungjuuml;discher Wanderbund and the Hechaluz were known to have lived and worked in Grüsen. In 1925, it was designated a „kosher center“, with the chaluzim distributed among the village's farms.

In September 1937, on the initiative of the Reich Representation of Jews in Germany and the Hechaluz, the construction of the Middle Hachshara in Ellguth-Steinau began. The estate belonged to the Jewish factory owner family Fränkel from Neustadt O.S. The institution was considered a „prestigious estate of the Reich Association of Jews in Germany".

München, June 11, 1914.  - Dear Mrs. Lotte. - My two cards to you have remained without reply and I am now in the greatest anxiety as to what will happen now, because I know of no one else to turn to. Grete Wollheim is still in Friedrichsrode. I can't wait for her to come home, as it won't be decided for another 14 days whether she is fit for work. Yesterday Regine Deutsch arrived unexpectedly and I'm coming back with her at 6 o'clock on Saturday evening. I would like to ask you the following.

The Polenzwerder estate was acquired in 1923 by the brothers Julius and Gustav Meyer and used as a brickworks and agricultural business. The brickworks was out of operation from 1932, after which Polenzwerder was only used for farming. Gustav Meyer's son Max was the manager of the estate until 1937.

Before the end of 1935, it was decided to found a non-Zionist emigration school for German-Jewish youths, which was to offer an alternative to the Hachsharot. On January 16, 1936, the constituent assembly took place in the offices of the Reich Representation of Jews in Germany (RV). Representatives of the most important Jewish organizations in Germany, with the exception of the Zionist Association for Germany (ZVfD), took part in the board of trustees and the working committee.

The fishing hachshara training center „Kibbutz Zerubavel“ existed in 1946 in Blankenese, near Hamburg. The Jewish Agency and the left-wing Poale Zion movement ran the Zerubavel fishing kibbutz, where they offered mainly young, Eastern European-Jewish displaced persons (DPs) training to enable them to immigrate to the British Mandate of Palestine.

The last remaining Jewish school in Hamburg during the Nazi era was located at Karolinenstra<e 35 from 1938. On April 29, 1942, the Gestapo in Hamburg decreed that the Israelitische Töchterschule at Karolinenstraße 35 had to be closed. Since December 1941, a smear campaign had been launched by the school administration to deprive the Jewish community of its school.