Coding Opportunities and Development for Equitable Students Act or the High School CODES Act This bill amends the Carl D. Perkins Career and Technical Education Act of 2006 to direct the Department of Education (ED) to carry out a coding demonstration program. Under the program, ED shall award grants to local educational agencies for the establishment or expansion of programs that allow high-school students to take a coding class in place of a mathematics, science, or foreign language class as graduation requirement.