Media type: E-Article Title: Why has the number of teachers per student risen while teacher quality has declined? Contributor: Stoddard, Christiana Published: Elsevier BV, 2003 Published in: Journal of Urban Economics, 53 (2003) 3, Seite 458-481 Language: English DOI: 10.1016/s0094-1190(03)00004-4 ISSN: 0094-1190 Keywords: Urban Studies ; Economics and Econometrics Origination: Footnote: