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You can get your child an AAC device a few ways:

• Add it to your child’s IEP. If your child has an IEP, you can request that an AAC device be made part of it, and that they always have access to it in school. (Some schools will allow you to take the device home, too.)
• Ask your child’s doctor. You can request an evaluation for an AAC device through your child’s doctor. This requires an evaluation, and your child’s insurance should cover part (or all) of the costs.
• Buy one yourself. Many AAC devices are just apps installed on regular iPads or a tablet. They can be a bit pricey, but getting insurance to pay for AAC devices can take a long time.