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Assessing the instructional quality of private tutoring and its effects on student outcomes: Analyses from the German National Educational Panel Study |
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| Authors: | Karin Guill Oliver Lüdtke Olaf Köller |
| Institution: | 1. Leibniz Institute for Science and Mathematics Education, Kiel, Germany;2. Leibniz Institute for Science and Mathematics Education, Kiel, Germany, and Centre for International Student Assessment, Munich, Germany |
| Abstract: | |
| Keywords: | private tutoring instructional quality shadow education |