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Does CAS Need Your Permission to Interview Your Child at School?

Learn what Ontario's child protection standards say about CAS workers interviewing a child at school, and what you can do if it happened without your knowledge.

Family Law5 min readTSLBy the Treadstone Law Team · OntarioUpdated October 28, 2026
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Key takeaways
  • The Ontario Child Protection Standards say that, under the traditional approach, interviews may take place with or without the parent's knowledge or consent depending on circumstances.
  • For customized investigations, it is preferable to obtain the parents' agreement, or give notice, that the CAS will interview the child if safety is not compromised.
  • Workers must involve family and community in safety plans whenever possible and consistent with the child's safety.
  • If you are unhappy with how a society handled things, you can complain to the society.

Many parents learn only afterward that a children's aid society (CAS) worker spoke with their child at school. It can feel like a betrayal of trust, and parents often ask whether the worker needed permission first.

This article explains what the Ontario standards say about interviewing children, why the answer is not a simple yes or no, and what you can do next. It is general information, not legal advice. Because each case depends on its facts, a family lawyer can tell you how this applies to you.

What the standards say about interviewing a child

The Ontario Child Protection Standards (2016), Standard 2, deals with how an investigation is carried out. It describes two approaches. For customized investigations, it is preferable to obtain the parents' agreement, or give notice, that the CAS will interview the child if the child's safety is not compromised.

Under the traditional approach, interviews may take place with or without the parent's knowledge or consent, depending on circumstances. The standard does not name schools.

In plain terms, the standards treat prior notice to parents as preferable in some cases but do not make parental permission a universal requirement. The standards are a policy document for societies, and their current status should be confirmed with a lawyer, since they refer to the earlier child welfare legislation.

Why a worker might speak to a child without telling you

A worker investigating a concern may worry that telling a parent first could affect what the child says or could put the child at risk. The standards recognize that circumstances differ and leave room for interviews without the parent's knowledge.

That does not mean anything goes. The Act's overall purposes include promoting the child's interests, protection and well-being, and using the least disruptive course of action that is available and appropriate. A parent who feels a worker overreached can raise it with the society or a lawyer.

ApproachWhat the standard says about interviewing the child
Customized investigationPreferable to obtain the parents' agreement, or give notice, if the child's safety is not compromised
Traditional approachInterviews may occur with or without the parent's knowledge or consent depending on circumstances

What an interview is not

Speaking with a child during an investigation is different from removing a child. Removing a child is a separate step with its own legal tests, and how those tests apply depends on the facts, so it is worth confirming with a lawyer.

It is also different from a court case. Parties to a child protection proceeding are the applicant, the society and the child's parent, with added representatives for First Nations, Inuk or Métis children. A child aged 12 or older is entitled to notice of a protection proceeding and to be present at the hearing, subject to a court exception for emotional harm. An investigation interview happens before any of that.

Workers may also seek information from others. The standards say the CAS may consider obtaining collateral information with the consent of the subject of the information, and should consider whether to seek a warrant or telewarrant for access to records, in consultation with legal counsel.

Safety plans and your cooperation

After an investigation starts, a worker may propose a safety plan. Standard 3 requires the plan to be assessed by a supervisor and approved before it is implemented, to be formally documented within five days of first face-to-face contact, and to secure the safety of the referred child. Workers are to involve family, extended family and community whenever possible and consistent with the child's safety.

Understand what you are being asked to agree to before you do. A temporary care agreement is a separate, formal written agreement under which a person temporarily unable to care for a child agrees to the society's care and custody. A safety plan and a temporary care agreement are not the same thing, and a lawyer can help you tell the difference in your situation.

What to do next

If you want to raise a concern about how the society acted, a person may complain to a society about a service sought or received. The society's decision after its complaint review is final, except that the complainant may apply to the Board for a review in the circumstances the Act allows. If the society later starts a court case, you will have deadlines, including filing an Answer and Plan of Care within thirty days of receiving the CAS application.

Frequently asked questions

Is CAS required to tell me before interviewing my child?

The Child Protection Standards say it is preferable, for customized investigations, to obtain the parents' agreement or give notice if the child's safety is not compromised. Under the traditional approach, interviews may occur with or without the parent's knowledge or consent depending on circumstances.

Can the school refuse to let the worker speak to my child?

The standards do not name schools. What a particular school will do depends on its own policies, so a lawyer or the school board can tell you more.

Can I ask what my child said?

You can ask the worker about the concerns and what happens next. Whether and how you can get more detail depends on your situation, so it is worth confirming with a lawyer.

What if I think the worker acted unfairly?

You can complain to the society about a service sought or received. You can also speak with a family lawyer about whether anything else is available in your circumstances.

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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