“…Educational resources (books, building, computers, class, bus, grants) Ruggiero et al (1995), Jimenez and Paqueo (1996), , Athanassopoulos and Shale (1997), Cooper and Cohn (1997), Heshmati and Kumbhakar (1997), Ruggiero and Bretschneider (1998), , Thursby (2000), Moreno and Tadepali (2002) (2012), Mancebón et al (2012), Misra et al (2012), Thieme et al (2012) (2013), Haelermans and Ruggiero (2013), Zoghbi et al (2013), Crespo-Cebada et al (2014). Enrollment , Ruggiero and Vitaliano (1999), (2010), Rayeni and Saljooghi (2010), Gronberg et al (2012), Johnes et al (2012), Misra et al (2012), Aristovnik and Obadic (2014), . Expenditures (teaching, research, administrators, supporting staff) Bessent and Bessent (1980), Bessent et al (1982), Butler and Monk (1985), Sengupta and Sfeir (1986), Jesson et al (1987), , Smith and Mayston (1987), Mayston and Jesson (1988), Färe et al (1989), Beasley (1990), Callan and Santerre (1990), Diamond and Medewitz (1990), Barrow (1991), Ganley and Cubbin (1992), Deller and Rudnicki (1993), …”