As used in this chapter: "Modernization" shall mean the making of major structural changes in such facilities and may include as incidental thereto the replacement of fixtures, fittings, furnishings, and service systems of a school facility in order to bring it up to a contemporary state consistent with the needs of changing educational programs and applicable codes.

"Major structural change" shall mean major components of a school facility contributing to the basic structure and shall not include those components such as portable partitions, free-standing panels and screens, portable equipment, and furnishings that do not contribute to the basic structure.