Here are great links to webinars and handouts that show how curriculum-based measurement (CBM) tools, including DIBLES for ELLs
http://www.studentprogress.org/library/Webinars.asp#ELLReading

Another good guidance simple piece by our leading researcher in the field of special education— Sharon Vaughn:
http://www.rtinetwork.org/learn/diversity/englishlanguagelearners

Another by Jan Habrouck leading researcher in CBM— with a case study
http://www.colorincolorado.org/article/13026/

This website has some tools— look in the list of tools
http://www.interventioncentral.org/cbm_warehouse

Plus 1 tool from Louisiana that I like for any grade and 1 guide from the Center on Instruction on teaching ELLs.