Karl A. Schleunes, "Enlightenment, reform, reaction: the schooling revolution in Prussia." Central European History 12.4 (1979): 315-342 online.
Yasemin Nuhoglu Soysal, and David Strang, "Construction of the First Mass Education Systems in Nineteenth-Century Europe," Sociology of Education (1989) 62#4 pp. 277–288 in JSTOR
Mitchell G. Ash, "Bachelor of What, Master of Whom? The Humboldt Myth and Historical Transformations of Higher Education in German‐Speaking Europe and the U.S." European Journal of Education 41.2 (2006): 245-267 online.
questia.com
Ellwood Cubberley, The History of Education: Educational Practice and Progress Considered as a Phase of the Development and Spread of Western Civilization (1920) online