State grant is a financial aid system set up by the government to help students from poor families. This is a kind of subsidy for students during their study in school, aiming at helping students solve the difficulties in tuition, accommodation and books.
Education subsidy for disabled children is a policy established to help children from disabled families receive compulsory education. This is an economic subsidy for disabled families, aiming at helping them pay their children's tuition, books, transportation and other education-related expenses.
Although both belong to education aid's category, their objects and purposes are different. The national bursary focuses on the assistance to students from economically disadvantaged families, while the education subsidy for disabled children is a subsidy policy aimed at the special difficulties of children from disabled families.