OP, this is 15:10 again. Re your post above:
1) Look for significant discrepancies both within the IQ, between the IQ and various achievement tests (WISC vs. WJ comparison) and between the various achievement tests (WJ vs. WJ comparison -- like how can a child score high in WJ -- reading comp but have a significant discrepancy with WJ - Reading Fluency? this would suggest a problem in one specific area of reading that should be addressed even if the overall reading composite does not have a significant discrepancy from IQ.
If your tester would not give a FSIQ that is VERY significant (and not in a good way...) The tester should have calculated a "general ability index" or GAI that you can use instead of the FSIQ to compare for "significant discrepancies"
I don't understand something -- you said your child had an IEP early on for speech, then was dismissed from that to a 504 plan in 3rd grade, and now the school is suggesting an IEP. Did the school system do an IQ test when your child had a IEP for speech? Did they do an IQ test in 3rd grade? If so, how were the results different from the recent test?
2) re figuring out the meltdowns and the ED label:
Examine both speech and/or ADD/executive dysfunction as possible underlying reasons for these meltdowns. IMO, it sounds like you don't have enough assessment on the speech/language side yet to search for and connect any possible weakness on assessment with adverse impact in the classroom. "Feeling like she isn't doing well on a test/quiz" can be a speech issue -- not understanding the question or finding it hard to articulate an answer in writing or not finding the answer the way you would express it as one of the answer choices. It can also be an indication of underlying executive dysfunction issues -- realizing that one didn't study enough, didn't study the right material, can't get the answers out fast enough to get through the test, or can't attack the test in an effective way (eliminating answers, working backwards, etc.). "Feeling overwhelmed at the complexity of a task." is CLASSIC ADD/Executive dysfunction marker! Students with executive dysfunction need "special instruction" in how to breakdown a task. For example -- first I will circle and number each part of the prompt I have to answer 1)tell what the character did to solve a problem 2) support with examples from text and 3) tell what you would do to solve a similar problem. Then I will take 5 minutes to brainstorm in each of these categories. Then I will order my ideas in an outline. Then I will write my answer without worrying about spelling or grammar. Then I will edit my answer. Etc. You also mention struggling with group work and feeling like the group doesn't understand what she is saying -- these are def speech issues and can be related to expressive speech issues and/or pragmatic speech issues.
IMO, a 504 plan that "allows her to leave the room when this [crying, panicking, feeling overwhelmed, etc.] starts to happen" is wholly inadequate. Allowing a student to leave the room after they have already panicked, with little or no support to deal with that panic and return to class, is closing the barn door after the horse has bolted. There needs to be a clear understanding of what leads to panic and ways to structure the class so that the panic triggers are minimized. There also needs to be a supported approach to dealing with panic. A student should be encouraged to come to the teacher or go to another room where there is a sped teacher and say, "I'm feeling really uncomfortable about this part of the assignment, can you help me?" Or be able to put aside an assignment for later help without negative repercussions. An IEP team should be brainstorming these solutions, not just allowing her to leave the room by herself.
While the behavior you describe is part of the ED definition, it misses the most important part of the ED definition, which I am bolding --
Inappropriate types of behavior or feelings under normal circumstances as shown by reports and information from multiple
sources. Provide time frame for inappropriate behavior or feelings, such as anxiety, attention issues, excessive crying, curling
up in fetal position, hiding under furniture, paranoia feelings of persecution, verbally and/or physically attacking others
without any apparent reason, etc.
The school CAN ONLY consider these behaviors inappropriate if they are occurring in the context of a NORMAL situation. Your child's intra-WISC and WISC/WJ discrepancies are NOT "normal circumstances". Significant discrepancies and problems such as these usually are present from a very early age and only grow wider and wider without special instruction and as the demands of the classroom increase with age. Since the school has only provided a 504 since 3rd grade, it is clear that your child has gotten no "special instruction" (because "special instruction" is only provided via IEP) that would have helped her manage the increasing demands of the classroom.
If you look at it from her perspective, crying, becoming anxious, crawling under a desk, panicking, etc. are NORMAL reactions to an ABNORMAL situation. Each year the demands of school have become increasingly complex, and she is expected to master these demands even though she has expressive, attentional and executive dysfunction weaknesses. The school hasn't even acknowledged that she needs any special instruction to figure out how to manage her work, and instead is just giving her accommodations like extra time. In fact, by sending her out of the room when she panics, the school is telling her that the real problem is that she is unhappy that she can't succeed and that she just has to stop being unhappy about it. How would you feel if you had an office job producing widgets and despite having a boss who repeatedly produced a widget in front of you, you still couldn't produce the required quality and number of widgets on time? All your colleagues can do so with ease and each year the gap between you and your colleagues grow. None of them want to eat lunch with you. None of them understand why you have questions about widgets. None of them want to be on your widget-building team. Your annual raise and job are threatened. You'd probably break down crying too. Maybe if somebody broke down widget construction and let you practice step by step, you'd be a better widget producer. Or maybe if you got to practice each step in isolation, you'd be able to get your widget construction speed up. But, no one is giving you that help. They just get angry and send you out of the room to "calm yourself down" and expect that you will magically get the widget construction right when you come back.
This is why I really hate the ED label. Schools fail for years to give appropriate help to kids with SLDs, OHIs or other disabilities, and then stigmatize them when, after years of inadequate help, the student is finally breaking down in tears or anger in class (which takes a LOT given how taboo it is to cry at school). I say this as a parent to a child refused an IEP despite an early language disorder diagnosis. By 2nd grade, he began crying and calling himself stupid. As a family member of someone with mental illness, believe me, there is a difference between anxiety that arises from a sucky situation and anxiety to a degree that is inappropriate to a situation. Sure, a student who has been in this cycle of non-assistance and failure for awhile may have such entrenched negative self-thought beliefs and coping responses that they need help from a counselor or psychologist to re-think their self-image and how to get more effective assistance, but that's very different from being ED, IMO.
FWIW, my DS, who was experiencing increasing anxiety, sadness, negative self-esteem, withdrawal from the classroom and insubordination to the teacher, found HUGE relief when I sat down and explained his neuropsych testing, strengths/weaknesses, and ways that we were going to put in place supports. One year later, the happy, optimistic child I had is back. Knowing that there is a real difference (and a reason for it) between him and his peers, is actually a huge help. Normalizing that difference in terms of emphasizing that everyone has unique strength/weakness profiles is also hugely helpful. Being exposed to useful, explicit, repetitive instruction and seeing that over time, with a different approach, he can learn the same things as other kids, is a huge relief. It also opened the door for him to tell us MUCH more about how he felt in school and what was difficult. If you don't feel comfortable doing this, ask the neuropsych if he/she will spend an hour explaining to your DD what is going on, what she might need that is different from most other kids, and how there are other kids like her and that she is not dumb or doomed to failure.