38 CFR §21.5800

1. (a)Courses permitted. An individual may receive educational assistance and subsistence allowance only while receiving instruction in a postsecondary course offered at any institution in the United States (including the District of Columbia, the Commonwealth of Puerto Rico, Guam and the U.S. Virgin Islands) that is accredited by a nationally recognized accrediting agency or association or by an accrediting agency or association recognized by the Secretary of Education.
2. (b)Courses precluded. An individual shall receive neither educational assistance nor subsistence allowance while pursuing any of the following courses:
   1. (1)A course offered at the secondary level or below;
   2. (2)A course offered by an institution located outside the United States (except in Guam, the Commonwealth of Puerto Rico and the U.S. Virgin Islands);
   3. (3)A course offered by a nonaccredited institution; and
   4. (4)Courses which do not require the student to receive instruction at the institution. These include—
      1. (i)Correspondence courses,
      2. (ii)Combination correspondence—residence courses, and
      3. (iii)Courses offered through independent study.