There are state protocols.
And certain accommodations for students are allowed.
Elements like test presentation, student response, and the location and time of test taking can be changed.
For example, students can complete answers with an assistive device rather than filling test bubbles, or, read questions out loud to themselves.
That special help must be documented on the student's education plan.
Special education teachers should be trained on all of this and know the specific accommodations for each student
Test administrators can't coach students, edit their answers, give clues to answers, or change the context of a question through paraphrasing.
All of this, of course, can be a gray area.
But state rules say the district superintendent and principal have the responsibility to report irregularities if they're found.
Staff is also responsible.
The Illinois State Board of Education usually leaves the decision of sanctions on the school or staff up to the district.
But it will enforce its own if necessary.