This author does not see a specific legal issue here. Frankly more facts are needed. What kind of release does the school wish the parent to sign?
Other than not providing additional information to the diagnosing doctor, how is the failure to return the form, impacting the parent? Is it impacting the insurance rates or a co-pay? Why would the parent not want to sign the release? Is it one for medical information about the child? If so, ins't the parent going to put the child's medical conditions into dispute anyway?
This author, based on these facts does not see an issue for which there is a legal remedy.
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