This chapter makes a literature review based on the Grant and Booth qualitative systematic methodology of the studies about the educational situation of the Roma in Spain, with an wider, extended scope that allows to compare the findings with those conducted on other countries’ Roma populations. Studies on the Roma educational situation in Spain are hindered by the lack of official, periodical statistics, having to rely on sample-based surveys and ethnographic studies. In spite of the inaccuracy of the studies all of them show, as a general picture, a staggering educational gap between the Roma and the rest of society which is common to all Western countries. Most of the studies on Roma education have concentrated in this negative aspect. Numerous theoretical frameworks have been developed to explain this staggering education gap. All them acknowledge the phenomenon as a multidimensional one but for heuristic purposes they can be ordered along an endogenous/exogenous factors continuum depending on how much they stress the weight of factors stemming from characteristics of the Roma ethnic group itself or, on the contrary, of the majority non-Roma society. The literature review has also identified an emergent critical current that sees this studies focused on educational underachievement as a sharing a common essentialist bias that helps to reinforce the stigmatization of Roma and have turned to focus, instead, on the study of academic success among the Roma. Although this emerging field is very promising, our review has identify several significant research gaps in this regard: a lack of longitudinal studies, a lack of studies on the Roma upper and middle classes and a lack of studies on Roma students in post-compulsory education, particularly the university level. This article encourages researchers to fill this gaps with the conviction that the knowledge obtained can help combat the negative stereotypes and the self-fulfilling prophecy effect that approaches focused on Roma underachievement may have.