This article analyzes an original dataset measuring school choice availability and usage in large, urban U.S. school districts from the 1995-1996 school year through the 2002-2003 school year. The results, disaggregated by school choice type, show that publicly funded schools of choice significantly expanded their enrollments over the time period, while private school enrollments remained fairly constant. Student demographics and geographic region account for some of the variation in district level availability and usage of school choice. Further analysis suggests that the presence of one type of school choice does not necessarily lead to availability and usage of other types of choice. (Contains 2 figures, 8 tables and 8 notes.)