Subject to subsection (b), an educational assistance program established under
section 2141 of this title shall provide for payment by the Secretary concerned of educational expenses incurred for instruction at an accredited institution by a person entitled to such assistance under this chapter. Expenses for which payment may be made under this section include tuition, fees, books, laboratory fees, and shop fees for consumable materials used as part of classroom or laboratory instruction. Payments under this section shall be limited to those educational expenses normally incurred by students at the institution involved.