There seems to be a lot of misunderstanding over exactly how ADD/ADHD affects people. Honestly, those of us with ADD are the last ones to need extra time on a standardized test.
In ADD, the cerebral cortex is understimulated and does a poor job of screening out distractions. Under most circumstances, concentration actually causes to the cerebral cortex to shut down, making ordinary distractions even more powerful. This is why those with ADD have such a difficult time in a standard classroom where there are auditory, visual, tactile, and olfactory stimula all around.
However, this changes when a person with ADD is placed in a situation of unusual stress, like being a nurse in an ER, a cook in a busy kitchen, a soldier during combat, or a student during a highly important test. The cerebral cortex kicks into high gear and is capable of screening out nearly all distractions, allowing the person to maintain abnormally high focus for an extended period of time. Adults with ADD are known to be adrenaline junkies, because the high stress allows them to stay focused for much longer and get an enormous amount accomplished.
I have ADD. It wasn’t diagnosed until I was 34 (at which point, all my friends smacked their foreheads simultaneously and said “Duh!”). The last thing I ever needed during a test was more time. I was usually, and still am, the person who handed in the test first or second. Most people with ADD that I know are the same way.
This doesn’t, however, address different instructional needs of learning-different or learning-disabled students. Schools have long been modeled on factories, and they work best for those children who fall in the middle of the bell curve. For those who fall on either end, it can be an abysmal failure.
Does this mean we are coddling students who don’t end up in the 80% super-majority that do fine with regular instruction techniques? Absolutely not. It means we aren’t leaving them twisting in the wind. It means that we are eventually benefiting ourselves by allowing those students to learn to the best of their abilities. They will learning coping mechanisms to deal with the way everyone else does things, but if their needs are never acknowledged or met, then those coping mechanisms will also be starved.
Yes, some students and their parents abuse the system. Yes, we have lost sight of the notion that “normal” does infer “not special”. In the end, though, those students will find that they aren’t helped by extra allowances. They will fail, and they will need to determine how to get up and succeed on their own.
Don’t take away allowances truly needed by other students, don’t expect them to learn the same as everyone else, and don’t expect them to have nothing to offer.