Immigration is the challenge that faces European countries in the immediate future. Spain, a former exporter of migrants, has recently become a host country, which must be taken into account if we wish to promote a multicultural, integrative school system. The aim in this article is to reach some conclusions about the integration of immigrants, not only in the educational system but also in social life generally. In doing so, first the global and national issues are considered, and the various policy solutions that have been proposed in various other European countries, and then a model that integrates several other approaches is applied to reflect on the implications of three types of immigration into Spanish schools. This is then reflected upon by observing and accounting for the experiences of migration reported in three schools. Three case studies are presented, two of infant and primary schools (3-12 years of age), and another of a secondary school (12-18 years of age), to add to the past analysis of the "modernist" approach to recent immigration in schools in one area of Spain. (Contains 5 notes.)