As a future special education teacher I have thought about some different ways of grading than grades. One way is to grade based on the progress of a students IEP goals. If you grade a student on what they are learning right now they might not understand if they are a slow leaner but grading based on IEP's helps the student to achieve a goal that will benefit them down the road.
Another way to grade is to make assignments worth more than tests. Some students get really bad test anxiety and fail the test even when they know the information. Some students have failed classes because of this, by making the assignments worth more than tests it allows students to show teachers what they really know without having all the pressure and anxiety that tests can provide.
Here are a few other ways to think about grading other than using grades!!
Another thing I have though about as a future special education teacher is the way things have been created. Most things have created for "normal" or "average" students. When testing who is average test showed the no one is average at everything, and only a very few are average at even a couple things. So when we create something for the average student, we are actually creating it for no one. That is where Universal Design for Learning comes into play. That is when you create something that everyone can use, not just the "average" There are three steps to Universal Design Learning:
Multiple means of representation
Multiple means of engagement
Multiple means of expression
I got this image from this website, it may be a good idea to go check it out since you probably can't read what it says.