CFR > Title 34 - Education > SUBTITLE B—Regulations of the Offices of the Department of Education > CHAPTER IV—OFFICE OF VOCATIONAL AND ADULT EDUCATION, DEPARTMENT OF EDUCATION (parts 400 to 491) > PART 421—BUSINESS AND EDUCATION STANDARDS PROGRAM > SUBPART A—General (§421.1 to §421.5) > 421.4—What regulations apply?