already told you.
She may say that he's only dysfluent once in a while, or that he's only dysfluent when he's tired. On the other hand, she may not think he'd qualify for services in school, but that doesn't necessarily mean he doesn't have a disorder.
In public school, to qualify for services, you must have a disability according to IDEA (Individuals with Disabilities Education Act). In school, one of the many criteria that they look at is if there is a disability that's affecting the student in school. The student's academic progress or social interactions must be affected before a child would qualify for services.
For instance, I've worked with children who are dysfluent and they are on the honor roll, participate in class, and aren't affected socially. In that case, there is no "disability" even though there may be a speech-language disorder. I've also worked with kids (privately) who are fine at school, but dysfluent at home.
Things to look for:
If your child is aware of his dysfluency, and is frustrated by it, if he's doing things physically to try to break out of the dysfluency (such as blinking his eyes, moving a body part, stamping his foot), or if his dysfluency is ridiculed by others or keeping him from participating in school, then I would be concerned. You may ask for a child study meeting at school if your concerns continue, or see if your insurance would cover an evaluation by a speech-language pathologist. But certainly, talk to the school SLP if you didn't get a clear reason why she's not concerned. She may well be right, and there's no reason to spend money if you don't need to.
Also, keep track of when he's dysfluent, if he's repeating part word or the whole word, and how many times. Here are two of many different patterns of stuttering:
Part word (but): b-b-b-but
Whole word: But-but-but
One other thought - there's a difference between stuttering and something called cluttering, fyi. Two resources for you:
http://www.stuttersfa.org/default.htmhttp://kidshealth.org/teen/diseases_conditions/sight/speech_disorders.htmlIn the meantime, slow down your rate of speech and have him do the same. Sometimes that helps.