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Can My Ex Change Our Child's School Without My Consent in Ontario?

Learn who decides where your child goes to school in Ontario, when one parent cannot act alone, and what a court can do if your ex enrolled them elsewhere.

Family Law5 min readTSLBy the Treadstone Law Team · OntarioUpdated October 28, 2026
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Key takeaways
  • Choosing a school is a significant education decision, and Ontario treats education as part of decision-making responsibility, which can be sole or joint.
  • Whether your ex could act alone usually depends on what your separation agreement or court order says, and informal arrangements are harder to enforce.
  • If parents cannot agree, either can apply for a parenting order, and the judge must act in the child's best interests.
  • Gather your documents and get advice quickly, because the answer turns on the wording of your order or agreement.

You find out that your child has been enrolled in a different school, and nobody asked you. It is upsetting, and it raises an urgent question: was your ex allowed to do that, and can you undo it?

The honest answer depends on what paperwork exists between you and whether you were married. This article explains the general rules in Ontario, what a court can do, and what to do first. It is general information, not legal advice for your situation.

Who decides about school: decision-making responsibility

Ontario describes decision-making responsibility as covering significant decisions about a child, such as health, education and religion. It can be held by one parent alone (sole) or by both parents together (joint). Choosing or changing a child's school is generally the kind of significant education decision this refers to.

Joint decision-making needs parents who can cooperate and communicate. If you share it, one parent enrolling the child elsewhere without involving the other is the kind of conduct you may need to raise with a court. If your ex holds sole decision-making for education, the position is different. What counts is the exact wording of the order or agreement, so read it closely.

The Divorce Act also says decision-making responsibility can go to one parent, to both, or to others, and a court can divide it up in part. That means one parent may have say over education while another area, such as health, is shared.

When there is no order or written agreement

Many separated parents have only an informal arrangement. Ontario explains that a parent may have de facto decision-making when the child lives with them full-time, the spouses live separate and apart, and the other spouse accepts that arrangement. Legal decision-making responsibility exists only through a signed separation agreement or a court order, and enforcing your rights is harder without something in writing.

Parents also have the right to parenting time unless a court decides otherwise. An informal parenting plan can be hard to enforce. If a school change happened in this gap, you are not necessarily without options, but you may need a court to set out who decides what.

Which law applies to you

Two statutes can apply. If no divorce proceeding has started, the Children's Law Reform Act applies and a parent would need a parenting order under it. If a divorce has started or a Divorce Act parenting order exists, the Divorce Act applies. The Divorce Act applies only to married or formerly married spouses, so unmarried parents generally use the Children's Law Reform Act.

Your situationLaw that usually appliesWhat to look at first
Never married, no court caseChildren's Law Reform ActAny signed agreement or plan
Divorce started or Divorce Act order existsDivorce ActThe order's decision-making terms
No paperwork at allDepends on whether you were marriedWho the child lives with and what the other parent accepts

What a court can do

If you and your ex cannot agree, either of you can apply for a parenting order. The judge must act in the child's best interests and consider family violence. Under the Divorce Act, only the child's best interests count, and the court gives primary consideration to the child's physical, emotional and psychological safety, security and well-being.

A court can make parenting orders covering parenting time and decision-making, including interim orders, and can set schedules and conditions. The court also applies the principle that a child should have as much time with each spouse as is consistent with the child's best interests. A change of school can affect that time, for example through distance and travel, so the schedule may be part of the discussion.

If your case is under the Divorce Act and you and your ex agree on a parenting plan, the court must include it in the order unless it is not in the child's best interests, in which case the court may modify it. Whether a court would order the child back to the earlier school depends on your situation, so it is worth confirming with a lawyer.

What to do next

Act soon and keep things calm. Do not pull the child from the new school or keep them home as a way of reversing the change, because that can create new problems. Start with facts and paperwork.

If safety is a concern, such as family violence, tell your lawyer early. The Divorce Act definition includes physical, sexual, psychological and financial abuse and coercive and controlling behaviour, whether or not it is a crime.

Frequently asked questions

Can a school change be reversed by calling the school?

The school will usually look to who has legal authority, and that depends on your order or agreement. If there is no order, the school may not be able to resolve a dispute between parents. If parents cannot agree, either can apply for a parenting order.

Does the parent the child lives with get to choose the school?

Not automatically. Living with a child full-time can create de facto decision-making if the other parent accepts it, but legal decision-making exists only through a signed agreement or court order.

Can I get an urgent order without telling my ex?

A motion without notice is allowed in limited cases, such as where notice is not reasonably possible or there is immediate danger that a child will be removed from Ontario or to someone's health or safety. A school change on its own may not meet that test, so ask a lawyer.

What if we are not married?

If no divorce proceeding has started, the Children's Law Reform Act applies and a parent would need a parenting order under it. The core question is still the child's best interests.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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