September Is a Good Month to Find Out What Your Kid Actually Uses From That Huge School Supply Haul

By September, the excitement of back-to-school shopping has usually been replaced by something much more useful: evidence.

Those carefully chosen notebooks, colorful pens, giant packs of pencils, folders, binders, highlighters, glue sticks, and elaborate organizers have now had several weeks to prove whether your child actually needs them. Some are already being used daily, while others may not have moved from the bottom of a backpack or bedroom desk since the first day of school.

That matters when families are spending hundreds of dollars getting children ready for class. The 2026 Deloitte Back-to-School Survey found that surveyed parents expected to spend an average of $557 per K–12 student, with total back-to-school spending projected at $30.4 billion.

Instead of treating August’s shopping list as final, use September to conduct a simple school supply audit. The goal isn’t to criticize what you bought—it’s to figure out what your child actually uses so you can stop buying duplicates, make smarter restocking decisions and create a much more accurate list next year.

Start With What Has Actually Been Used

The easiest school supply audit begins with your child’s backpack, desk, locker supplies, and homework area.

Look for evidence rather than asking, “Do you need this?” A notebook with 20 pages of classwork is clearly serving a purpose, while an untouched three-ring binder may tell a different story.

Make four quick categories: used constantly, used occasionally, unopened, and already running out.

You may discover that your middle schooler requested five notebooks in August, but two teachers handle nearly everything digitally. On the other hand, an elementary student who started with six glue sticks may already be asking for more.

Pay attention to what’s disappearing fastest. Those are the supplies worth buying when you see a genuinely good sale because you now have evidence that your household will use them.

Compare the Teacher’s List With September Reality

Supply lists are a starting point, not necessarily a prediction of how every classroom will operate for the next nine months.

Teachers can change assignments, classroom routines may become clearer after the first few weeks, and students sometimes discover that an item they thought they’d use every day isn’t particularly useful.

That’s one reason Consumer Reports recommends asking teachers which supplies are needed immediately and purchasing other items later rather than feeling pressured to buy everything before the first day.

September is the perfect time to revisit that idea.

Pull up the original school or teacher supply list and place it next to what’s actually in your child’s backpack. Mark items as essential, occasionally needed, not used yet, or needs replacement soon.

And before declaring something unnecessary, ask your child whether the teacher has mentioned needing it later. Graph paper, index cards, poster board, and specialty notebooks may be intended for projects or units that haven’t started yet.

Find the Supplies You Already Own Before Buying More

September can also expose one of the easiest ways families waste money on school supplies: buying another package because nobody knows where the first one went.

Before restocking anything, check the backpack, child’s bedroom, homework station, kitchen junk drawer, family office and leftover school-supply bins from previous years.

You might be surprised by how much inventory your house already contains.

If your child says they’re running out of pencils but you discover two unopened 24-count boxes in a closet, you’ve found the next 48 pencils for $0 in additional spending. The same principle applies to loose-leaf paper, pens, erasers, glue sticks, index cards and notebooks.

Consumer Reports has also advised families to take inventory of supplies they already own before purchasing more.

Consider creating one designated school-supply bin at home. When something runs low, everyone knows where to look before another item lands on the shopping list.

Put Unused Supplies in a “Wait” Box

Don’t immediately donate or throw away everything that hasn’t been used by September.

Instead, create a box labeled something like “School Supplies — Use Before Buying More.”

Put unopened notebooks, folders, index cards, extra pencils, markers, and other currently unnecessary items there. If a teacher asks for one of those supplies in November, you already own it.

If the items remain untouched at the end of the school year, move them directly into next year’s supply inventory.

This approach also prevents unused supplies from becoming invisible clutter scattered across multiple drawers and closets. A $3 notebook doesn’t seem financially important by itself, but ten or twenty small duplicate purchases across a school year can quietly add to the family’s education budget.

Look at What Broke, Not Just What Was Used

A September audit should also answer another question: Did the cheapest version actually save money?

Suppose you bought a $4 binder that already has a broken ring or a bargain backpack with a failing zipper. Replacing an inexpensive product multiple times can eventually cost more than buying one durable version.

On the other hand, you may discover that the premium organizer, specialty pencil case or expensive mechanical pencils weren’t necessary at all.

That’s why the audit isn’t simply about buying cheaper products. It’s about identifying where paying more improved durability and where paying more added nothing your child actually needed.

That distinction can make next year’s shopping much smarter.

Give Your Child a Role in the Audit

This can also become a simple money lesson instead of another household chore handled entirely by a parent.

Ask your child to sort supplies into three categories: I use this a lot, I sometimes use this, and I haven’t used this yet.

Then ask one more question: “If we were buying school supplies again tomorrow, which of these would you still ask me to buy?”

That question can be surprisingly revealing.

Older children and teenagers can go a step further. Show them what several of those items cost and ask whether they’d spend the same amount again now that they’ve used—or ignored—the products for several weeks.

Keep the conversation neutral. The point isn’t to make a child feel guilty because the $8 planner you bought hasn’t been opened. You’re helping them connect purchasing decisions with actual value, which is a financial skill they’ll eventually need when spending their own money.

Families Are Already Looking Harder for Value

This exercise fits with the way many parents approached the 2026 back-to-school season.

Deloitte found that 31% of surveyed K–12 parents used four or more cost-saving behaviors, while inflation-adjusted planned family spending was down 6% from the previous year. Interestingly, those highly value-conscious parents weren’t necessarily the lowest spenders; Deloitte found they planned to spend about 14% more than other shoppers, suggesting that value shopping can mean spending selectively rather than simply buying the cheapest possible products.

The National Retail Federation similarly reported that families were using discounts, promotions and secondhand products to stretch back-to-school budgets as classes began.

Price pressure was clearly on parents’ minds. Earlier in the season, NRF found that 78% of back-to-school shoppers expected higher prices, and roughly one-third said they typically plan their shopping around summer sales.

That makes September’s audit useful for more than organizing the desk. Knowing exactly which products your child burns through gives you a much better idea of which clearance items or future promotions are actually worth buying.

Turn September Into Your Restocking Baseline

Once you’ve finished the audit, make a short list with three headings:

• Buy again when needed: Pencils, glue sticks, paper or anything your child is clearly consuming.
• Already have extras: Items sitting unopened in your supply box.
• Don’t automatically buy next year: Products that sounded essential in August but aren’t being used.

Save that list somewhere you’ll actually find it next summer—your phone’s notes app, family budgeting spreadsheet or calendar reminder works better than a piece of paper destined for a drawer.

You can even record quantities. If your child goes through roughly one glue stick every three weeks but uses only one notebook all semester, next August’s shopping list becomes much easier to estimate.

September Can Make Next August Cheaper

The biggest advantage of a September school supply audit isn’t necessarily what you save this month. It’s the information you carry into the rest of the school year and eventually into next summer.

Before the school year started, you were shopping largely from a list and making educated guesses about what your child would use. Now you have several weeks of real-world evidence.

Use it to restock genuine essentials, keep useful extras organized, skip unnecessary duplicates and recognize when paying a little more for durability might actually save money.

With surveyed parents expecting to spend $557 per K–12 student this year, even trimming a few unnecessary purchases matters. More importantly, you’re replacing the annual habit of “buy everything just in case” with a much simpler rule: buy based on what your child actually uses.

What school supply did you buy this year that your child has barely touched—and will it change what you put in the cart next August? Share your experience in the comments.

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Evan Morgan

Evan Morgan has been a full-time freelance writer and editor for 10+ years. When not working, he enjoys catching the latest true crime documentary or getting lost in a good book.