“…In the first direction, authors have enriched the endogenous growth model by introducing in addition to the basic model variables other variables related to health conditions, institutions and free trade policy ( (Berthé lemy et al, 1997), (Abdouni & Hanchane, 2008), (Mansouri, 2009) and (Bouoiyour et al, 2009)). On the second research direction, some authors have used more sophisticated econometric methods because studies that rely on cross section data has been criticized (GMM panel data, Bayesian approach ...) ( (Fall & Thiaw, 2012), (Leon-Gonzalez & Vinayagathasan, 2015), (Fetahi-Vehapi et al, 2015) and (Mbulawa, 2015)). The authors of the third research direction have introduced the role of quality education in explaining growth ( (Hanushek & Kimko, 2000), (Barro & Lee, 2001), (Altinok & Murseli, 2007), (Hanushek & Woessmann, 2012), (Altinok et al, 2014)).…”