Is Dyslexia covred under the Americans with Disabilities Act?

My girlfriend is attending a Veterinarian Technical School, and is afraid she is close to failing. One failed class and you are kicked out. The class she is afraid of failing has all short answer tests. Despite having mostly correct answers, the teacher deducts serious points for incorrect spelling and grammar.

The teacher refuses to give her special attention for her dyslexia and even the higher ups in the school agree. Their argument is that in the real world spelling counts and they don’t care about learning disabilities.

I am absolutely furious that her career may be in jeopardy because of this and I am ready to help her press charges if necessary. I tried searching the internet, but I have no idea what I’m looking for. If you have any expertise in Law, please help us.