CB and ACT are private entities, and may get away with making their own rules. Note the words "should generally grant" throughout the DOJ document.
That being said, a motivated school (such as the one I work for), can generate a fairly high success rate for getting accommodations approved. Typically, we ask for 50% (standard) extended time, typed response, and/or read-aloud (though we attempt this one only with pretty strong documentation of fairly significant disability). Sometimes, 100% extended time. The key is that the school needs to ask for specific accommodations, and have all documentation on hand. It doesn't work as well if the documentation is extremely old or sloppy, or if you just hand them an evaluation and expect them to provide every accommodation in the report.
