Guardianship vs supported decision-making vs power of attorney

By the IEP Atlas editorial teamLast updated November 1, 2026

Short answer

Guardianship is a court order that moves some or all of an adult's legal decisions to another person. Supported decision-making lets the adult keep their rights and choose people to help them decide. A power of attorney is a document the adult signs to name someone who can act for them. The deciding question: which decisions does your child need help with?

At the age of majority, usually 18, the law treats your child as an adult. Under IDEA, the rights you held in special education move to your child in most states, unless a court has found your child unable to make their own decisions.^[1] The school must tell your child about this at least one year before it happens.^[2] The page on the age of majority notice covers what the school does.

That moment leads many families to ask about guardianship. It is one option among several. This page compares the three most common ones. It is general information. Laws on guardianship, powers of attorney and supported decision-making differ a lot from state to state, so talk with a lawyer or your state's disability rights agency before you choose.

The deciding question

Ask: "Which decisions does my child need help with, and what is the least restrictive way to give that help?"

Many young adults need help with a few things, such as money or medical forms, and manage the rest. A plan that matches that pattern keeps as many rights with your child as possible. Some young adults cannot make or share decisions even with support, and a court process may be the right tool.

Side-by-side table

Feature	Guardianship	Supported decision-making	Power of attorney
What it is	A court order naming a guardian to make some or all decisions for an adult	An arrangement where the adult picks trusted people to help them understand choices and decide	A legal document in which the adult names an agent to act for them in set areas
Basis in law	State guardianship law; a judge decides	Informal in every state; some states also have a law for written agreements	State law on powers of attorney and health care proxies
Who decides	The guardian, in the areas the court assigns	The adult, with help from supporters	The adult, and the agent when acting within the document
Rights the adult keeps	Only those the court leaves; limited guardianship leaves more	All of them	All of them; the adult can usually change or cancel the document
What it takes to set up	A court petition, evaluations and a hearing; can take months and cost fees	A conversation, and often a written agreement	The adult must understand what they are signing
How it ends or changes	Only through the court	The adult can change supporters at any time	The adult can revoke it while able to
Effect on IEP rights at 18	Educational rights go to the guardian if the court assigns them	Rights go to the student, who can bring supporters to meetings	Rights go to the student; some states let the student name someone for education decisions
Example	A judge names a parent as guardian for medical and financial decisions	A student meets with a parent and a job coach before signing a work contract	A student names a parent as health care agent so the parent can talk with doctors
Where it is documented	Court order (letters of guardianship)	Written supported decision-making agreement, if used	Signed power of attorney or health care proxy form

Some states also let a parent be appointed to represent an adult student's educational interests when the student cannot give informed consent, without full guardianship.^[1] Ask your district whether your state has that process.

How supported decision-making works day to day

The National Resource Center for Supported Decision-Making describes it as people with disabilities using trusted friends, family and professionals to help them understand choices and make their own decisions.^[3] In practice, it can look like this:

Before an IEP meeting, the student and a parent go over the draft goals together.
At a doctor's visit, the student signs a release so a sister can join the conversation.
For a bank account, the student sets up text alerts that also go to a parent.

Students practice these skills in school. Self-determination goals teach choice-making and problem solving, and self-advocacy goals teach speaking up. The self-determination activities page has lesson ideas. Goal templates are in the self-determination goals library.

Three family scenarios

Scenario 1: Mia, 17, plans to attend community college. She manages her schedule and classes but gets confused by medical bills and insurance forms.

Answer: Mia may not need a court process. A health care power of attorney and a release form for her doctor could cover the area where she needs help. Supported decision-making can cover the rest, with Mia making her own calls. Her IEP rights would transfer to her at 18, and she can invite her parents to meetings.

Scenario 2: Andre, 17, communicates with a speech-generating device. He makes clear choices about food, activities and people, but struggles to weigh long-term risks such as signing a lease.

Answer: The family might combine tools: supported decision-making for daily life, and a power of attorney for finances if Andre understands and agrees to it. If those do not give enough protection, a limited guardianship for financial matters only is another option. The team should ask how Andre shows understanding, using his device. Communication access matters before anyone decides he cannot decide.

Scenario 3: Lily, 17, has profound disabilities. She does not yet have a reliable way to show yes or no, and she has complex medical needs.

Answer: Supported decision-making and powers of attorney both depend on Lily understanding and choosing. If she cannot do that, guardianship may be the tool that lets someone make medical decisions for her. The family can ask the court about limits and review dates. The IEP team should keep working on a reliable communication system, which can change what is possible later.

What to do before your child turns 18

List the decisions. Write down health, money, school, work, housing and relationships. Mark where your child decides alone, with help, or not yet.
Ask the school for the transfer of rights notice. It should come at least a year before the age of majority.
Practice now. Have your child lead part of their IEP meeting. The transfer of rights entry explains what moves to your child.
Learn your state's options. Your state's Parent Training and Information Center and the transition planning guide are good starting points. The Center for Parent Information and Resources has an overview.^[4]
Get legal advice for your family. A lawyer who works with disability and guardianship law can explain what fits your child.

For definitions to share with relatives, see the guardianship, supported decision-making and age of majority glossary entries.

Frequently asked questions

Do I need guardianship when my child turns 18?

Not always. Guardianship is one option. Many young adults use supported decision-making, a power of attorney or release forms instead. The right choice depends on which decisions your child can make, with or without help, and on your state's laws.

What happens to IEP rights at 18 without guardianship?

In most states, the rights you held under IDEA move to your child at the age of majority. Your child can still invite you to IEP meetings and ask for your help with decisions.

Is supported decision-making legally recognized?

People can use supported decision-making in every state as an informal arrangement. Some states also have laws that recognize written supported decision-making agreements. Check your state's rules.

Can guardianship be limited?

In many states, yes. A court can give a guardian power over only some areas, such as finances or medical care, and leave other rights with the adult. Ask a lawyer how limited guardianship works in your state.

Use it in IEP Atlas

Sources

34 CFR §300.520: Transfer of parental rights at age of majority, Legal Information Institute, Cornell Law School
34 CFR §300.320: Definition of individualized education program, Legal Information Institute, Cornell Law School
Supported Decision-Making, National Resource Center for Supported Decision-Making
Transition to Adulthood, CPIR

Written and checked by the IEP Atlas editorial team under our editorial policy. This guide describes general practice and federal rules. It is not legal advice; your state may add requirements, and the IEP team makes the decisions for each student.