I'm responding with the assumption that this is either a US school or a Canadian school (and if so, things work similarly in Canada re IEP services and accommodations). If not, just ignore my reply
Since your ds already has an IEP, it will still be in effect when school starts, up until the time you have your update meeting for this year.
What I would do re the email depends on answers to a few questions:
1) Are the neurospych results and diagnosis new, or have the report and results been used to draw up the IEP in previous years?
2) Is your ds new to this school?
3) Is this an immersion school - and the "third" language is a new added language?
4) Is this a 4-year or 3-year high school program?
As mentioned above by bluemagic, I'd think through what your ds would do in place of the foreign language that he isn't going to take - would it be another class at the school, independent study, study hall, etc - and think through *why* the other options present reasonable or worthwhile alternatives. I'd also maybe think about a loose connection to foreign language - could he perhaps substitute it with a social studies class that dealt with another culture/etc?
I would also prepare a brief explanation of why learning/studying a foreign language can be either difficult or time-consuming for a student with a receptive/expressive language disorder, list how it will specifically challenge your ds (and it's ok if the challenge is nothing other than the amount of time it will take is too much in combination with all of his other coursework - but if you can be more specific re "it takes twice as long for ds to finish x task as a neurotypical student" or "ds' expressive language challenge makes it difficult for him to ...." etc - show how it is directly related to the class subject or how it impacts your ds' schedules as a whole. Whatever the specifics, just be sure to state the specifics. Data always helps too - not just the neuropsych report, but if you have past homework/classwork examples or if you can collect any kind of "data" yourself at home by asking your ds to perform specific tasks related to the challenge and measuring his performance.
I hope that makes sense!
Best wishes,
polarbear
