Final answer:
The Expansion and Chapter Assistance Committee works with the CEO to develop, implement, and review the fraternity's expansion program and program for assisting student chapters.
Step-by-step explanation:
The standing committee that works with the CEO to develop, implement, and review both the fraternity's expansion program and its program for assisting student chapters is the Expansion and Chapter Assistance Committee. This committee is responsible for creating strategies and plans to expand the fraternity's reach and support its student chapters. They work closely with the CEO to ensure the success of these programs by providing guidance, evaluation, and implementing necessary changes.