I'll always remember Mr. Byrd's class where he made fun of me for having a hard time reading a paragraph - and I don't even have a really bad case. Never make fun - it's creates scars that sometimes never heal. Luckily over time I was able to overcome a lot of my reading problems.
It kills me that standardized tests exist, period. Those tests taught me nothing (other than to fear taking tests). Everyone is different. Everyone learns differently. Standardized tests are a waste of money, time, resources, and students' true potential.