The purpose of this state report card is to provide the general public and policymakers with information they can use to assess and improve postsecondary education in each state. "Measuring Up 2006" is the fourth in a series of biennial report cards. The report card grades states in six overall performance categories: (1) Preparation: How adequately does the state prepare students for education and training beyond high school?; (2) Participation: Do state residents have sufficient opportunities to enroll in education and training beyond high school?; (3) Affordability: How affordable is higher education for students and their families?; (4) Completion: Do students make progress toward and complete their certificates or degrees in a timely manner?; (5) Benefits: What benefits does the state receive from having a highly educated population?; and (6) Learning: What is known about student learning as a result of education and training beyond high school? Findings for Delaware include: (1) Despite improvement, Delaware lags much of the nation in preparing students to succeed in college. Delaware receives a C in preparation this year; (2) Although Delaware has lost ground in enrolling students in higher education, its performance remains good when compared with other states. This year Delaware receives a B in participation; (3) Delaware has made no notable progress in making higher education affordable. Delaware receives an F in affordability this year; (4) Delaware has made substantial gains in the proportion of students earning certificates or degrees in a timely manner. This year Delaware receives an A- in completion; (5) Despite a substantial increase in the benefits the state receives from having a more highly educated population, Delaware earns a B- in benefits this year; and (6) Like most states, Delaware receives an "Incomplete" in Learning because insufficient data would not allow meaningful state-by-state comparisons. However, data are available this year to examine the readiness of college graduates--from two- and four-year institutions--for advanced practice. This report also includes international comparisons, additional information, questions and answers, and state grades. (Contains 1 figure.) [For "Measuring Up, 2006. The National Report Card on Higher Education," see ED493360.]