Embodiments of the present invention provide improved circuit board stiffeners. In one embodiment the present invention includes a circuit board stiffener comprising a lower stiffener piece having a first lower surface for abutting an upper surface of a test system and a first upper surface, and at least one upper stiffener piece having a second lower surface for abutting the first upper surface of the lower stiffener piece and a second upper surface for attaching to a circuit board.