TY  - JOUR
A1  - Traini, Claudia
A1  - Kleinert, Corinna
A1  - Bittmann, Felix
T1  - How does exposure to a different school track influence learning progress?
BT  - explaining scissor effects by track in Germany
JF  - Research in social stratification and mobility
N2  - German secondary education is known for its early, strict selection of students into different schooling tracks based on prior academic performance, based on the assumption that students learn more efficiently when the learning environment is tailored to their individual abilities and needs. While much previous research has shown that entry into tracks is socially selective, less is known whether there are effects of being exposed to a particular school track on educational success and which mechanisms are contributing to these effects. We investigate this question by comparing the learning progress in reading and mathematics of students in the upper and intermediate schooling track over five years of secondary schooling, based on large-scale German-wide longitudinal data (NEPS-SC3). Even when restricting our sample to a group of students with similar preconditions and controlling for skills at the beginning of secondary schooling, we find that the learning progress in the upper track is higher for both domains, suggesting scissor effects of track exposure. It is mainly the average performance level of the class, and to a lesser degree its social background composition, which mediates these effects. In contrast, migration background composition of the class and instructional quality perceived by students hardly contribute to explaining increasing learning gains in the upper track.
KW  - Tracking
KW  - Learning progress
KW  - German secondary education
KW  - Learning
KW  - environment
KW  - Social stratification
Y1  - 2021
U6  - https://doi.org/10.1016/j.rssm.2021.100625
SN  - 0276-5624
VL  - 76
SP  - 285
EP  - 298
PB  - Elsevier
CY  - Amsterdam [u.a.]
ER  - 
TY  - JOUR
A1  - Wolters, Steffen
A1  - Bittmann, Felix
A1  - Kummer, Volker
T1  - The first subfossil records of Urtica kioviensis Rogow. and their consequences for palaeoecological interpretations
N2  - Among plant remains from Mesolithic layers dating from 9249 to 7779 B.C. at the excavation site of Friesack IV in north-eastern Germany, nutlets of Urtica kioviensis were identified. Morphological studies have shown that they clearly differed from all other European Urtica species investigated. In contrast, pollen morphological investigations revealed only slight differences between the central European Urtica species, which could hardly have been noticed during routine or normal pollen analyses. The records of U. kioviensis nutlets are the first subfossil finds reported and prove the indigenous status of this taxon in north-eastern Germany. The records are discussed in the context of the overall species spectrum of the Mesolithic layers and consequences for the interpretation of pollen analytical studies concerning human impact are pointed out
Y1  - 2005
ER  -