My 4-year-old son started preschool this

Answer

Tonight: message your son's teacher (or the preschool director) for the one line only they can give you — whether the classroom's "strictly nut-free" rule covers items with a voluntary "may contain traces of peanut / almond / cashew" warning, or only items that actually list those in the ingredients. Until that written answer is back, leave this granola bar out of his lunchbox tomorrow.

**Tonight**

- Keep the granola bar box (brand, full ingredients list, lot number) on the counter — the school or the maker may want to see it.
- Send the teacher or director one short message:

> "Thanks for the welcome flyer. Quick question: when the flyer says the classroom is strictly nut-free, does that also exclude items that carry a voluntary 'may contain traces of peanut / almond / cashew' precautionary statement on the back panel — even when peanut and tree nuts are not in the ingredients list? Or does the rule only cover ingredients? Could you point me to the written policy?"

**1. What "May contain" actually is under US federal rules**

FDA requires packaged foods to declare the nine major food allergens — milk, egg, fish, crustacean shellfish, tree nuts, peanut, wheat, soybean, and (since 2023-01-01) sesame — either inside the ingredients list or in a "Contains" line right after it. That part is mandatory.

"May contain traces of …" sits outside that scheme. It is called **Precautionary Allergen Labeling (PAL)**, and at the federal level PAL is **voluntary and unregulated**. FDA's language to manufacturers is "should," not "must." There is no fixed wording, no defined threshold for when a maker must print it, and no rule that says a maker who shares equipment has to print it. The back panel on the bar you bought follows that pattern: no peanut or tree nut in the ingredients, but a voluntary "shared equipment" warning. It is neither a safety verdict nor a danger verdict — it is one maker's risk disclosure.

FAE also notes that the **absence** of such a line does not mean the product is safe, and AAAAI points out that PAL wording varies and does not let a consumer judge actual risk.

**2. Whether your son's school treats PAL as "nut-free" or not**

That is exactly the question in the message above. Schools and classrooms differ: some treat any "may contain peanut/tree nut" line as excluded; some only exclude ingredients; some decide per child with a written allergy action plan. The welcome flyer used the words "strictly nut-free" without defining them, and your school district or licensing body (DCFS in Illinois) sets the legal layer behind that rule — that layer is not in my pack. The school itself is the only one who can give you the line in writing.

**3. Should the bar go in tomorrow's lunchbox?**

Your son himself has no known allergy and has tolerated peanut butter at home — so this is not about his risk. It is about a classmate with severe allergy in a shared room. The cautious default for tomorrow morning, before the school answers, is to leave this bar out and pack something whose label is clean (no "may contain" line for peanut/tree nut, or a bar that the school has already cleared). Once the teacher or director gives you the written line, you can decide for the rest of the week.

**Limits**

I am not the school, and I have not read your school's written policy. I also do not carry Illinois school or licensing food-allergy rules — for the legal layer behind the classroom rule, your district's health office or DCFS is the door. What is in my pack is the federal label regime (PAL is voluntary, not standardized) and the general principle that any allergen advisory statement is something to clear with the rule-holder, not something to read past on your own.