“…Moreover, academic staff (we will tell this variable Teachers) has been used as an input in educational process efficiency studies by Kantabutra and Tang, 2006;Kim et al, 2006;Martín, 2006;Giménez et al, 2007;Spircu et al, 2007;Conroy and Arguea, 2008;Yuhong and Yongmei, 2008;Cordero et al, 2008;Addonizio, 2009;Agasisti, 2009;Cheo, 2009;Franta and Konecny, 2009;Tyagi et al, 2009;Naper, 2010;Ouellette and Vierstraete, 2010;Chen and Chen, 2011;and Thieme et al, 2011, among others.…”