Sociologists exploring educational injustice often focus on socio-economic segregation as a central measure of injustice. The comprehensive ideal, furthermore, has the idea of socio-economic integration built into it. The current paper argues that socio-economic segregation is valuable only insofar as it serves other, more fundamental values. This matters because sometimes policy-makers will find themselves facing trade-offs between increasing integration and promoting the other, more fundamental values that underpin the value of integration.