Keeping Siblings Together in Foster Care: What the Law Requires and What Research Shows

Sibling relationships are often the most stable and longest-lasting connections in a foster child's life. Birth parents come and go; caseworkers change; placements shift. But a brother or sister who was there for all of it represents continuity and shared history that no other relationship can replicate. This is why federal law takes sibling placement seriously — and why the gap between what the law requires and what actually happens is one of the most painful realities in the foster care system.

What Federal Law Requires

The Fostering Connections to Success and Increasing Adoptions Act of 2008 amended the federal foster care statutes to require that states make "reasonable efforts" to place siblings together when they enter care. This applies from the initial removal — agencies are expected to seek placement options that can accommodate multiple children together, not to default to separate placements for convenience.

When siblings cannot be placed together, the law requires that agencies make "reasonable efforts" to facilitate sibling-to-sibling visits or other forms of contact, unless a court determines that contact would be contrary to the child's health or safety.

States must also include sibling contact plans in case plans and permanency plans. At adoption, the law requires that courts include provisions for sibling contact in adoption agreements when it is in the best interest of the child.

This federal mandate is significant. It means that separation of siblings without documented justification and without a sibling contact plan is a systemic failure, not just a caseworker's individual decision. Agencies that routinely separate siblings without efforts to place them together are not complying with federal law.

Why Siblings Are Still Separated

Despite federal requirements, sibling separation remains common. The most frequently cited reasons:

Limited placement availability. Most foster families are licensed for one to two children. A sibling group of three or four children is significantly harder to place together. Agencies with insufficient capacity in their licensed family pool routinely place siblings separately because there is no family available who can take all of them.

Differing needs. Sometimes sibling groups include children with very different levels of need — one child requires therapeutic foster care while another can be placed in a traditional family. Different agencies or placement levels may be involved.

Emergency placements. When children are removed in an emergency and a single placement that can take all siblings is not immediately available, children are placed separately. "Reasonable efforts" to reunite them may follow, but separate placements often become permanent because children are not moved once placed.

Differing permanency goals. Sometimes one sibling is freed for adoption while another is not, creating situations where the children are on different legal tracks.

Family preferences. Some foster families request only children of a specific age range and decline to take an infant alongside older siblings.

Research from Casey Family Programs and the broader child welfare literature consistently shows that sibling placement together is associated with better outcomes — fewer placement disruptions, better emotional adjustment, and greater sense of permanency and belonging. Children placed with siblings also tend to have shorter stays in care.

What Happens to Siblings When Adoption Separates Them

When siblings are placed in different foster homes and one is adopted before the other — or when one is adopted and another reunified with the birth family — the ongoing sibling relationship requires active, intentional support.

Several states have statutes specifically requiring sibling visitation even after adoption. Pennsylvania, for example, requires that a Guardian Ad Litem represent each minor sibling during the development of a post-adoption contact agreement to ensure their relational needs are addressed. Oklahoma has similar requirements.

In other states, sibling contact after adoption is addressed through voluntary post-adoption contact agreements (PACAs) that can include biological siblings in other placements or adoptive families. These agreements may provide for:

• Regular in-person visits between siblings
• Phone or video calls
• Photo and letter exchanges
• Attendance at significant events (birthdays, school performances)

The enforceability of these agreements varies by state, but the research on their value is not in question. Sibling bonds are protective. Maintaining them after adoption — even when it requires coordination between multiple families and agencies — serves the child's long-term wellbeing.

What Families Considering Sibling Groups Should Know

Taking in a sibling group is one of the most impactful and most demanding forms of foster care placement. A few practical realities:

You will receive more financial support. Each child in a sibling group receives their own foster care maintenance payment and, if adopted, their own adoption assistance agreement. A family of four that takes in three siblings receives three separate stipends and three potential subsidy agreements — which offsets some of the logistical complexity.

The reunification dynamics can be different. Sibling groups are sometimes separated during reunification — the younger child goes home while the older child stays in care, for example. This creates painful partial reunifications that are harder to process for everyone involved.

Sibling dynamics include the trauma. Siblings who were together during abuse or neglect may have complicated relationships with each other. Parentified older children who were caretakers for younger siblings carry particular burdens. The sibling relationship itself may include loyalty conflicts, resentment, or patterns that were adaptive in an unsafe home but are disruptive in a stable one.

Schools and scheduling multiply. Multiple children at different ages may mean multiple schools, multiple sets of therapy appointments, multiple visits with birth parents, and multiple caseworkers. The logistical load is significant.

The bond is also protective. Children placed with siblings consistently show better adjustment and fewer placement disruptions than those placed alone. The sibling relationship provides comfort, familiarity, and connection in an otherwise disorienting experience. For many foster children, a sibling is the most important person in their world.

Advocating for Sibling Placements

If you are a foster parent to a child whose sibling is placed elsewhere, you have standing to advocate for sibling contact:

• Request a sibling visitation plan from the caseworker
• Ask that sibling contact be included in the child's case plan and any court documents
• Offer to facilitate visits yourself — transportation to neutral locations, video calls — if the agency is slow to arrange them
• Connect with the other sibling's foster family directly, when appropriate, to coordinate contact outside the agency structure

If you are hoping to adopt and want to take a sibling group, communicate this clearly in your home study and licensing paperwork. Being open to sibling placements expands your options and addresses one of the most significant unmet needs in the foster care system.

The Foster-to-Adopt Transition Guide addresses sibling dynamics in the context of the broader transition — including how to handle situations where a child's sibling is not placed with you, how to support a child who is grieving a sibling separation, and what to include in post-adoption contact agreements when siblings are involved.

The goal of keeping siblings together is one area where the foster care system's stated values and its actual practices diverge most visibly. Understanding your rights and your options as a foster or adoptive parent — and being willing to advocate actively — is how you help close that gap for the children in your care.