I have a friend I will call Brian. Single dad of two daughters, both in elementary school when this story started. His co-parent was one of the most high-conflict people I have watched anyone navigate. The girls went back and forth on a standard 50/50 schedule, and each Monday when they came home to Brian, their lunchboxes came with them. Empty containers. Water bottles. No freezer packs.
The freezer packs never came back.
At first Brian thought it was an oversight. He bought new ones. Weeks later, the same thing. He asked his co-parent politely to please return them. She either ignored the message or wrote back something that had nothing to do with freezer packs and everything to do with what Brian had done wrong. He asked again. Same result. He bought more.
Over the course of that one school year, the freezer packs became something bigger than the freezer packs. He had spent more money on replacements than he wanted to think about. He had asked her about them again and again, always politely. He was worn out, and more than the money, he was worn out by how unfair it was. He was the one buying them. He was the one packing the lunches. And she was the one making it harder for no reason he could figure out except that she could.
That is the trap of the fairness argument in a high-conflict dynamic. You are right. You know you are right. Any reasonable person looking at the situation would agree you are right. But the person on the other end of the situation is not playing by fairness rules, and the more energy you put into being right, the more they extract from you. The freezer packs are not really the issue. The issue is that being right is not getting you anywhere, and the not-getting-anywhere is what is grinding you down.
By Christmas that year, Brian did something any exhausted parent will immediately recognize the impulse behind. He wrapped up a stack of freezer packs and gave them to his ex as a "funny" holiday gift.
I want to talk about that moment, because every co-parent reading this understands exactly why he did it. And I want to talk about the mechanical fights that fill the back-to-school season, the ones that seem too petty to matter but eat up more energy than anything else, because the freezer pack war is not really about freezer packs. And the school supply war and the lunch account war and the reimbursement war are not really about school supplies or lunch accounts or reimbursements either. They are about how a high-conflict co-parent keeps a slow, steady current of conflict running year-round.
I’m Michelle Mitchell, J.D. I’m a California litigator with 20+ years of prior litigation experience, a New Ways for Families® Certified Instructor with the High Conflict Institute, a Certified HCDP™ Coach, and I’m on the court-approved provider list for the San Diego, Riverside, San Bernardino, Santa Clara, and Marin Superior Courts. If you are heading into the school year with a co-parent who withholds, stonewalls, sabotages, or turns every small logistics question into a battle, this piece is for you.
Why Back-to-School Is a Flashpoint
Every co-parenting year has four predictable flashpoints. Summer, holidays, birthdays, and back-to-school. Each one has the same shape. There is a cluster of decisions that need to happen on a shared timeline, both parents need to coordinate to execute them, and every step is an opportunity for one parent or the other to make it harder.
Back-to-school is heavy because the decisions cluster tight. In a two- to three-week window in August, the following things all have to happen. Supplies purchased. Backpacks and lunchboxes replaced. Uniforms bought or approved. Medical and emergency contact forms signed. Extracurriculars registered for. Meet-the-teacher nights attended. Transportation figured out. Lunch accounts funded. Online platform accounts created. Photo permissions and field trip forms filled in.
In a functional co-parenting relationship, these get divided by convenience and no one thinks much about it. In a high-conflict one, each of them is either a fight, a stonewall, or a trap. And unlike summer or holidays, back-to-school does not end. It kicks off a nine-month stretch where school questions never stop coming, and every unresolved logistics fight in August becomes the template for how the whole school year runs.
The Mechanical Fights That Eat Up the Most Energy
Most co-parenting content on the internet covers the big topics. School choice. Custody schedule adjustments. How to talk to your kids about the transition. Those pieces are useful for parents in low-conflict co-parenting. They are almost useless for parents in high-conflict ones, because the fights that consume the most energy in a high-conflict dynamic are almost never the big decisions. They are the small mechanical ones.
School supplies. One parent buys everything and the other never reimburses. Or one parent refuses to buy anything. Or both parents assume the other will buy them and the kid shows up on day one with nothing. Or, most commonly, one parent buys everything and the other complains that they bought the wrong things at the wrong store for the wrong price.
Lunch account balances. Whose card is on file. When the balance runs low, whose responsibility it is to top it up. What happens when one parent refuses to reload their share and the kid gets to the register on a Wednesday and their account is declined in front of everyone in the lunch line.
Reimbursement disputes. Court orders often require both parents to split extracurricular costs, school-related expenses, and uniforms. In practice, one parent covers everything, sends the receipt, and never sees a dollar back. Or gets a partial reimbursement three months later with a message about how the amount was excessive. Or gets no response at all.
Uniforms. Where uniforms are required, which parent buys them, whether both parents keep a set at their home. This is often a proxy fight for who is "the primary parent," which is a fight high-conflict co-parents rarely stop having.
Online platform fees. Modern schools charge for homework platforms, learning apps, digital textbook access, photo services. Small individual charges that add up. The parent whose card is on file ends up funding all of it and then chasing reimbursement.
Extracurricular sign-ups. Who has the authority to sign the kid up. What happens when both parents sign the kid up for competing activities. What happens when one parent signs the kid up without telling the other, and the other parent finds out on a Saturday morning that they are supposed to drive to a game they knew nothing about.
The small items that go missing. Freezer packs. Water bottles. Homework folders. Library books. Sports jerseys. Musical instruments. Winter coats. Retainers. Every high-conflict co-parent has a version of this pattern. Some keep detailed lists of what they have bought and what has not come home.
These are the fights that fill the co-parenting inbox from August through October. They are not glamorous, they do not make good essays about custody law, and they are not covered in the parenting books. But they are where most of the energy goes.
The Pattern Behind the Pattern (and What to Do About It)
When a high-conflict co-parent repeatedly withholds a small item like a freezer pack, the item is not the point. Control is the point.
Small-item withholding has a specific function in the high-conflict dynamic. It keeps the other parent thinking about the ex. It generates a low-grade current of frustration that never quite becomes big enough to be a court issue but never quite goes away. It creates a running deficit the withholding parent can pull out at any time as evidence of their reasonableness ("I gave back the sports jersey, why is he complaining?"). And it forces the targeted parent to spend money and mental bandwidth on things they should not have to spend it on.
The tempting response is to keep fighting the fairness argument. Ask again. Send a firmer message. Explain how much money you have spent. Point out the pattern. That approach is what most reasonable parents try, and it almost never works, because the person on the other end is not motivated by fairness. They are motivated by the reaction.
What actually breaks the pattern is to stop feeding it. And in most cases, the fastest way to stop feeding it is to remove the item from the equation entirely. If freezer packs never come back, you have three options that are all better than sending one more message asking for them.
Buy cheap disposable ice packs. Five- and ten-packs are inexpensive. Freeze them, pack them, throw them out. Nothing has to come home.
Change the lunch itself. Pack food that does not need to stay cold. Peanut butter sandwiches, cheese sticks in insulated pouches, thermoses of warm soup or pasta, wraps, fruit, crackers. A lot of what kids actually eat does not require refrigeration at all.
Freeze the water bottle. A frozen water bottle keeps the lunchbox cold and doubles as a cold drink by lunchtime. Nothing to return.
If your kids are old enough (usually around eight or nine, depending on the kid), you can teach them to be the return agent. Show them where the freezer pack goes back in the lunchbox after lunch. Make it part of the end-of-lunch routine at their other home. They may or may not remember, and you should not put more weight on their small shoulders than the situation deserves, but for older kids it is often a workable option.
The freezer pack question is not really "how do I get her to return them." The freezer pack question is "how do I remove this from my mental load." Once you frame it that way, the answer stops being an argument and starts being logistics. That reframe applies to almost every small-item withholding pattern you will run into during the school year.
The Christmas gift Brian gave his ex was the opposite of that reframe. It was one more attempt to make her recognize what she was doing. He was still trying to win the fairness argument. And the freezer packs kept disappearing, and now she had a story to tell about how Brian was the one being unreasonable.
I am not telling this story because Brian did something unusually bad. I am telling it because the impulse behind it is exactly what a worn-down parent feels every August when the school supply argument starts again. The impulse to make a point. To let the ex know that you notice the pattern. To do something. Anything. Even something small.
That impulse, understandable as it is, is one of the most reliable ways to make the pattern worse. What breaks the pattern is quieter. It looks like disengagement from the fight without disengagement from the kids. It looks like solving the logistics problem yourself instead of trying to make your co-parent solve it. And in the specific mechanical fights that fill the back-to-school season, it looks like the strategies I want to walk through next.
What SAFE Communication Actually Looks Like in the School-Supply Conversation
When the school year is starting and you need to communicate about something logistical, the way most people communicate is emotional. It sounds like some version of "You never bought the supplies last year, and now you're doing it again, and I need you to actually contribute this time." Everything in that message is true. And every word of it is going to make the outcome worse.
The communication framework I teach uses four principles. Strategic, meaning every message is written with an eye toward the long game and how it would read to a mediator six months from now. Attuned, meaning calibrated to the specific dynamic you are in and the specific person on the other end. Focused on the children, meaning every message stays anchored on the kids' Health, Education, and Welfare and nothing else. Email or app-based, meaning always in writing so there is a record.
That framework changes what a back-to-school message looks like. Here are three examples that came up in coaching conversations this past year, generalized so no one is identifiable.
Reactive version: "You didn't respond to my message about the school supply list last week. School starts in two weeks and we need to figure out who is buying what. This is exactly what happened last year and I ended up buying everything. I would like an actual answer this time."
Rewritten version: "The school supply list is attached. I plan to purchase the items on the top half of the list by Friday. Please confirm if you will handle the bottom half by then, or let me know if you would like me to purchase everything and split the receipt per our order."
Second example, extracurricular sign-ups.
Reactive version: "Emma told me you signed her up for competitive gymnastics without asking me first. You always do this. Practices are on my weekends and I never agreed to any of this."
Rewritten version: "Emma mentioned she is signed up for competitive gymnastics starting September. Please send me the practice schedule so I can plan the fall calendar and confirm which of the practices fall during my parenting time."
Third example, the school lunch account.
Reactive version: "The lunch account is at $2. I have paid the last four times. It is your turn."
Rewritten version: "The lunch account balance is $2 and will need to be reloaded before Monday. Please handle the next reload. If I do not hear back by Sunday, I will reload it and send you the receipt for your share per our order."
Notice what changed in each rewrite. The history is gone. The accusation is gone. The emotional charge is gone. What replaces them is a factual statement of the current situation, a clear next step, and a deadline that has a defined fallback if the co-parent does not respond. Every one of those messages, if screenshotted and shown to a mediator, judge, or evaluator, reads as calm, reasonable, and child-focused. Every one of the reactive versions reads as combative.
The counterintuitive thing about this style of writing is that it makes you feel worse in the short term. You do not get to release the frustration on the page. You do not get to make the other parent recognize the pattern. You have to swallow all of that and write something clinical instead. It feels like losing.
But the reactive version was never going to change the other parent's behavior. It was only going to become evidence. The rewritten version does not change the other parent's behavior either, but it protects your record, keeps the temperature down in the co-parenting inbox, and models for your kids what conflict looks like when a parent chooses not to escalate.
When to Document, and When to Just Replace It and Move On
Not every mechanical fight needs to become a documented pattern. A lot of the small-item withholding, the freezer packs and the water bottles and the homework folders, is not worth building a case around. It is worth solving logistically and moving on. Buying the disposable ice packs. Freezing the water bottle. Keeping a spare homework folder at your house. The mental relief of not needing your co-parent to cooperate on that specific thing is often worth more than the vindication of proving they were being petty.
But some patterns are worth documenting. This is the honest test I use with parents in coaching.
Does the pattern involve money that adds up? A ten-dollar freezer pack is not documentation-worthy. Two hundred dollars of school supplies that were supposed to be split fifty-fifty, sent as a receipt, and never reimbursed, is worth keeping a record of. Same with unreimbursed extracurricular fees, unreimbursed uniforms, unreimbursed medical costs. If the parenting plan splits these expenses and one parent is not paying their share, that is a pattern your attorney may want to know about. Keep the receipts, the timestamped requests, the responses (or the lack of them), and the running total. Whether and how to raise it formally is a legal question for your attorney.
Does the pattern affect the kids in a way that is not fixable at your house? A missing lunch account balance means the kid's card gets declined at the register in front of their friends. A missing homework folder means the kid shows up to school unprepared and gets marked down. Those are worth documenting, especially if they happen more than once, because they show a pattern of behavior that puts the kids in the middle.
Does the pattern connect to a specific term in your parenting plan? If your parenting plan says both parents will exchange the child’s necessary items at each transfer, and one parent consistently does not, that is a pattern your attorney may want to know about. Document each occurrence with a short, calm message that establishes the fact and does not editorialize. "The girls arrived Sunday without their band folders. Please make sure the folders come with them next transfer per the parenting plan." Save every one of those messages in a running log. Whether the pattern rises to something enforceable, and what to do about it, is a conversation for your attorney.
For anything that does not meet one of those three tests, just solve it and move on. You are not going to convince a mediator, a judge, or an evaluator to care about a freezer pack. You will convince yourself that fighting about it is not worth what it takes out of you.
Setting Your Kid Up When Your Co-Parent Is Not Cooperating
The kids do not need to know how much of the back-to-school setup falls on you. That is one of the hardest things to hold in a high-conflict co-parenting dynamic, because you are doing more than half the work and getting less than half of the credit, and the temptation to explain that to the kids is real. Do not.
What the kids need is to be prepared. That means, on your parenting days, they have what they need. If the school supply list has thirty items on it and your co-parent bought none of them, buy all thirty and keep a full set at your house. Same for backpacks, gym clothes, uniforms, and anything else that is required. If your co-parent sends the kids to you without something they need, you have it ready.
For younger kids, this is invisible. They just show up to school with everything. The mechanics of who bought what happen above their heads. For older kids, especially by middle school, they start to notice. And when they do, the right response is not to point out who did what. The right response is a version of, "You have what you need. I have you covered."
That posture, "you have what you need, I have you covered," is one of the most powerful things a high-conflict parent can offer their child. Kids in high-conflict co-parenting dynamics live with a low-grade uncertainty about whether the adults in their life have things handled. The parent who models steady, competent, quietly-managed logistics is the parent who becomes the anchor. Not the parent who wins the fairness argument. The parent who removes the argument from the kid's field of vision entirely.
That is the ROOTS work. Regular Opportunities Of Togetherness for Stability. The relationship-building that inoculates a kid against the pattern of one parent trying to destabilize the other. Every school year is nine months of small opportunities to be the parent who has it together, quietly and without fanfare, no matter what the other parent is doing.
When to Bring Your Attorney In
Most of the back-to-school mechanical fights should not go to your attorney. Attorneys are expensive, and asking one to draft a letter about school supplies is a good way to spend three hundred dollars on a fight that could have been solved with a twenty-dollar trip to Target.
But some patterns are worth a conversation with your attorney. Any of the following are worth raising with them. A pattern of unreimbursed expenses that adds up to a meaningful amount over time, especially if the parenting plan includes a cost-sharing provision. A co-parent who is signing your child up for extracurriculars that consume your parenting time without your input. A school-enrollment decision made by one parent without the other. Ongoing refusal to share access to the school portal, teacher communications, or emergency contact information. Any behavior at school events that becomes a safety concern, such as one parent showing up to a school function where the other parent has a restraining order in place. What to do about any of these, and whether the pattern rises to something enforceable in your specific case, is a legal question. Your attorney is the right person to answer it.
For the documentation work that supports your attorney's filing, that is often coach territory rather than lawyer territory. Organizing the message history, building the timeline, drafting factual statements that summarize the pattern for the court, curating the receipts. My Litigation Coaching service handles that documentary preparation so that when your attorney takes it to court, the record is clean, chronological, and easy to work with. The attorney handles the courtroom. Your job, and my job when we work together, is to make sure the record they take in with them is airtight.
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Frequently Asked About Back-to-School Co-Parenting
My co-parent won't buy any school supplies. What do I do?
Can I be reimbursed for school supplies my co-parent was supposed to split?
What if my co-parent signs our kid up for an activity without telling me?
Do both parents have to attend meet-the-teacher night?
My co-parent won’t reload the school lunch account. What can I do?
Can I put my new partner’s contact info on the school emergency contact form?
My co-parent talks badly about me to our kid’s teacher. What should I do?
My co-parent refuses to share the school portal login. What are my options?
Should I include my co-parent in messages to the teacher?
How do I keep my kid out of the middle when my co-parent will not communicate about school?
The Real Work of the School Year
The mechanical fights are what get most of the airtime, but they are not the real work of a high-conflict school year. The real work is quieter. It is regulating your nervous system before you open the co-parenting app in the morning. It is writing a message you know will not get the response you want, and sending it anyway. It is buying the freezer packs one more time and not saying anything about it. It is being the parent who has it together on your parenting days, even when your co-parent is doing everything they can to make that harder.
Your kids will not know most of what you did. That is part of what makes it so hard, and also part of what makes it the right work. What they will know is that when they are with you, things are calm. Supplies are there. Lunch is packed. Homework gets done. Life feels ordinary. In a high-conflict co-parenting setup, ordinary is a gift.
If you want help building the specific muscle of communicating differently through the school year, the 6-Week High Conflict Co-Parenting Skills Intensive™ is where we teach the full framework and give you the templates to work from. If you want someone else to hold the communication piece entirely so you can focus on your kids, SAFE Ghostwriting is our service that does exactly that. And if the pattern is at the point where documentation matters for court, Litigation Coaching is where we organize the record.
Not legal advice. This article is general educational content for co-parents navigating back-to-school logistics in high-conflict co-parenting dynamics. It is not legal advice and does not create an attorney-client relationship or any attorney-client privilege. Michelle Mitchell, J.D., is a California litigator with 20+ years of prior litigation experience; she is no longer in active law practice and does not practice family law. For legal advice specific to your situation, including reimbursement disputes, court-order enforcement, or school-enrollment issues, consult a licensed family law attorney in your jurisdiction. Individual results vary.
Michelle Mitchell, J.D.
Litigator with 20+ years of prior litigation experience, certified high-conflict co-parenting expert, parenting coordinator, and founder of High Conflict Resolutions, LLC. New Ways for Families Certified Instructor with the High Conflict Institute, Certified HCDP Coach trained by Brook Olsen, AFCC-trained Parent Coordinator, and Martha Beck Certified Wayfinder Coach. Trained in Peter Levine’s Somatic Experiencing®.