Justice Byron White, joined by Justices Brennan and Stewart, filed a concurring opinion saying the case 'would be a very different case' if the parents forbade their children from 'attending any school at any time and from complying in any way with the educational standards set by the State'; he pointed out that the burden on the children was relatively slight since they had acquired 'the basic tools of literacy to survive in modern society' and had attended eight grades of school.