When I was a SPED teacher, I did the modifying of the tests/assignments with the help of the teacher. We would sit down together and determine how the test should be modified. As far as the diploma issue, in TX in the past, if a student was on modified work and took a modified state assessment, then that student graduated on the minimum plan which simply meant that the student couldn't go directly to a 4 year uni. That didn't bar them from community college though. With the new Foundations plan, it gets a little more complicated, and the state has done away with the modified version...but that's another soapbox moment.