The Special Education regulations in Pennsylvania are found under the 22 Pa. Code Chapter 14 for school districts, and Chapter 711 for Charter Schools.
http://www.pacode.com/secure/data/022/022toc.html
A collection of Questions and Answers developed by Bureau of Special Education (BSE) to assist Local Educational Agencies (LEAs) in the implementation of Chapters 14 and 711 may be found using the following link--