This study addresses a critical and contemporary policy issue for students receiving special education services (SRSE)-their enrollment in charter schools. We present a longitudinal analysis of enrollment patterns of SRSE in urban public neighborhood and charter schools in the City of Chicago. In our analysis, we compare enrollments in each type of school (i.e., neighborhood and charter) while attending closely to differences across disability categories and grade spans (elementary and high school levels). Examining the enrollment of SRSE in charter schools is significant for several reasons. First, since their inception in 1991 in Minnesota, the charter school movement has been growing. For instance, from the 1999-2000 to 2011-2012 school years, the student enrollment in charter schools has increased from 0.3 million to 2.1 million students, accounting for 4.2% of the total national student enrollment in public schools (National Center for Education Statistics [NCES], 2014). In the 2009-2010 school year, more than 8% of students enrolled in charter schools received special education services (U.S. Government Accountability Office [GAO], 2012). These numbers can be expected to increase as the Every Student Succeeds Act (Pub. L.114-95) provides funding to expand high performing charter schools. Therefore, it is likely that increasingly more students, with and without disabilities, will be educated in charter schools. Second, while the number of charter schools continues to increase, advocacy groups, parents, neighborhood associations, state officials, and professional organizations have raised concerns about access and services for students with disabilities in these schools. One of the main concerns is the low enrollment of SRSE in charter schools in comparison with traditional public schools (TPS; GAO, 2012). This is an important issue as charter schools are expected to follow federal legislations that protect the rights of students with disabilities in public schools (Individuals With Disabilities Education Act [IDEA]; Section 504 of the Rehabilitation Act, and the Americans With Disabilities Act [ADA]; Ahearn, Lange, Rhim, & McLaughlin, 2001). These laws ensure that students are provided with a free appropriate 694846D PSXXX10.