International Food Assistance Improvement Act of 2012 - Amends the Food for Peace Act to direct the Administrator of the U.S. Agency for International Development (USAID) to: (1) improve the nutritional quality of U.S. food assistance, particularly for groups such as pregnant and lactating mothers, children under the age of five, and beneficiaries under the President's Emergency Fund for AIDS Relief in Africa; and (2) work within the Food Aid Consultative Group to increase coordination and oversight of food assistance programs.