Preview everything you can
Familiarity is the currency of a calm September. Before the first day — or during the first week, if the start already happened — ask the school for a walkthrough: the classroom, the desk, the bathroom route, the cafeteria, the bus loop. Photograph what you're allowed to and build a simple picture schedule at home. If a walkthrough isn't possible, most schools will share photos of the classroom and the new teacher; a face with a name attached is worth a week of easier goodbyes.
Brief the new team like the expert you are
An IEP tells the new teacher what services your child receives. It doesn't tell them that humming means happy, that transitions go better with a two-minute warning, or that the blue hoodie is non-negotiable. Send a one-page "About My Child" letter in the first week: strengths first, communication style, sensory triggers, early warning signs, and the three strategies that actually work. Teachers consistently describe these letters as the most useful document they receive all year.
Reset the body clock gently
If summer bedtimes drifted, walk them back in 15-minute steps rather than one brutal Sunday-night correction. Rebuild the morning routine as a visual sequence and rehearse it before it counts. Protect breakfast and the departure buffer — a morning that starts with rushing rarely recovers.
Expect the after-school crash
Many autistic students hold everything together at school and release it all at home — the after-school collapse is so common it has a name among parents. It is not a sign school is going badly; it's the cost of a full day of effort, paid to the people your child trusts most. What helps: a predictable decompression ritual (snack, quiet, movement, screens — whatever restores your child), zero questions for the first half hour, and homework negotiated for later or reduced through the IEP if evenings are consistently unraveling.
Watch for regression — and write it down
The first weeks back are also your data window. If skills your child had in June are missing in September, note it with dates and specifics, and share it with the teacher and therapists. Recoupment time — how long it takes to get back to the June baseline — is exactly the evidence that qualifies students for Extended School Year services next summer. Two minutes of notes a week now can secure six weeks of services later.
Check the IEP against reality
By early October, verify that everything on paper is happening in practice: the aide is assigned, speech sessions started, the sensory breaks are real. If something isn't in place, email the CSE chairperson — kindly, specifically, in writing. And if the placement itself clearly isn't working, you don't have to wait for the annual review: you can request a CSE meeting at any time.
September is a marathon dressed as a sprint. Lower the bar everywhere you can, celebrate the small wins loudly, and remember — the goal of the first month isn't progress. It's landing.