How to Organize Evidence for a Custody Case

Organize custody evidence around the questions the judge has to answer about your child, not around how you feel about your ex. In practice that means four things: a log of every item (what it is, where it came from, the date), a one-page timeline, a binder sorted by issue with tabs, and a labeled exhibit list that follows your court’s local rules. Keep the originals safe, bring copies, and cut anything that doesn’t show something about your child’s care, safety or stability.

Below is how to build each piece, what kinds of evidence usually matter, and where parents get tripped up by rules that change from state to state.

Start with what the judge has to decide

Custody decisions in every state turn on the child’s best interests, and each state lists its own factors. Common ones include who has handled day-to-day care, each parent’s ability to meet the child’s needs, the child’s ties to school and community, any history of abuse or domestic violence, and each parent’s willingness to support the child’s relationship with the other parent.

Before you collect anything, write your state’s factors on one sheet of paper (search “[your state] best interest of the child statute” or check your state court’s self-help site). Under each factor, jot down what you would need to show. That sheet decides what goes in the binder and what stays out.

Judges in family court often have a few hours, or less, for your whole hearing. A stack of 400 unsorted pages doesn’t get read. Twenty well-chosen exhibits that each answer a factor do.

Gather evidence that shows your child’s life

Most useful custody evidence comes from ordinary records. Here is where to look and how to get it.

School records

Report cards, attendance records, emails with teachers, sign-in sheets for conferences, and any IEP or 504 plan. Under the federal student privacy law (FERPA), schools must give both parents access to their child’s education records unless a court order, state law or other legally binding document specifically takes that right away. Living arrangements alone don’t change it. Ask the school office in writing and keep a copy of your request.

Medical and counseling records

Pediatrician and dental visits, immunization records, prescriptions, and who brought the child to each appointment. Under the HIPAA Privacy Rule, a parent is generally treated as the child’s personal representative and can get the records. There are real exceptions: when state law lets a minor consent to certain care (often reproductive or mental health care for teens), or when a provider reasonably believes giving access could endanger the child. Therapy notes get extra protection. For more, see whether medical records can be used in custody cases.

Messages with the other parent

Texts, emails and co-parenting app messages are often the most important evidence in a custody case, because they show how the two of you actually communicate. If your court ordered a co-parenting app such as OurFamilyWizard, its messages are timestamped and can’t be edited or deleted once sent, and the app can export them as a PDF report.

For texts, take screenshots that show the contact name or phone number and the date and time on each screen. Export or save the whole thread too, not just the worst messages. A judge who sees only the other parent’s angry reply, without your message that set it off, will wonder what’s missing, and the other side will produce it.

Your own records

• A parenting-time log. Date, scheduled exchange time, actual arrival time, and a one-line note. Write it the same day. A log kept as things happened carries more weight than one rebuilt from memory before trial.
• A calendar of caregiving. Who did school drop-off, practices, doctor visits, sick days.
• Photos and video of normal life: the child’s room, birthday parties, homework at the kitchen table. Keep the original files, which hold the date and time in their metadata.
• Financial records if support or expenses are at issue: pay stubs, receipts for childcare, activity fees, medical bills.

Official records

Police reports, protective orders, prior court orders, and CPS findings. You can usually request your own police reports from the agency. CPS records are confidential in most states and often require a court order or a formal discovery request to get; ask your lawyer or the court’s self-help center how it works where you live.

Recordings: check your state before you press record

This is where well-meaning parents get into real trouble. Federal law and most states let you record a conversation you are part of. But about a dozen states require consent from everyone in the conversation, at least in some situations. The Reporters Committee for Freedom of the Press lists them as California, Delaware, Florida, Illinois, Maryland, Massachusetts, Michigan (at least for third-party recordings), Montana, New Hampshire, Pennsylvania and Washington, and notes that a few other states treat phone calls and in-person talks differently. In an all-party state, a secret recording can be a crime and may be thrown out of court.

Recording your child’s phone calls with the other parent is riskier still, because you aren’t a party to that call. Some courts accept “vicarious consent,” where a parent consents for a young child. The federal Sixth Circuit allowed it in Pollock v. Pollock (1998), but only where the parent had a good-faith, objectively reasonable belief it was needed to protect the child. Other courts have refused to recognize it. Talk to a lawyer in your state before you do this, and before you hand any recording to the court.

Log every item as it comes in

Keep a simple spreadsheet or notebook with one line per item:

• Item number
• Short description (“Text from J. about missed pickup”)
• Date of the event
• Where it came from and how you got it (“School office, records request 3/4”)
• Which best-interest factor it supports
• Where the original is kept

Store originals in one place and work from copies. Scan paper records into a backed-up folder with file names that sort by date, such as 2026-03-04_school_attendance.pdf. Never mark up, crop or edit an original. If you highlight, do it on a copy.

Build a one-page timeline

A timeline lets the judge, your lawyer or a full custody evaluator understand the case in two minutes. List dates down the left side and one plain sentence for each event: separation, moves, school changes, court filings and orders, incidents, changes in the schedule. After each entry, note the item numbers from your log that back it up.

Keep it factual. “6/12: Child not picked up from school; teacher emailed me at 4:10 p.m. (Item 23)” is useful. “6/12: Another example of his total neglect” is not, and judges notice the difference.

Know the basic evidence rules

Every state has its own rules of evidence, and some family courts relax them for certain hearings. A few basics show up almost everywhere:

• Hearsay. A written statement from a neighbor, teacher or grandparent is usually hearsay if they aren’t there to testify. Plan to bring the person as a witness, or ask whether your court accepts sworn declarations for your type of hearing.
• The other parent’s own words. In most courts, a party’s own texts and emails can come in when offered by the other side. You still have to show they are what you say they are, which is why screenshots with the number and timestamp matter.
• Business records. School and medical records often come in through a records custodian’s sworn certification instead of a live witness. In Texas, that’s a business records affidavit under Texas Rule of Evidence 902(10), served on the other side at least 14 days before trial. Other states use different forms and deadlines, so ask the clerk or self-help center which one applies.

Label and assemble the binder

Use a 3-inch binder with tabs, one tab per best-interest factor or issue, and a printed index at the front. Put the timeline right after the index. Then follow your court’s local rules for exhibits, which differ more than most parents expect:

• Numbering. Texas Law Help tells self-represented parents to label exhibits with their role, such as “Petitioner’s Exhibit 1.” In Clackamas County, Oregon, the circuit court has petitioners start at Exhibit 1 and respondents start at Exhibit 101, with the exhibit number, case number and page number in the lower right corner. Other courts use letters for one side.
• Copies. Texas Law Help’s family court guide says to bring the original for the judge plus at least three copies: for the other party, the other party’s lawyer and the court reporter. Other courts want a different count, or electronic upload before the hearing.
• Deadlines. Many courts require you to exchange exhibits and witness lists with the other side days or weeks before trial. Miss the deadline and the judge may not let you use them.
• Privacy. Black out Social Security numbers, full account numbers and similar details before filing. Many states require it. Your child’s name may also need to be shortened to initials in some filings.
• Audio and video. Courts often want them on a flash drive or uploaded in a set format, sometimes checked by court staff ahead of time. Bring a transcript of anything you plan to play.

Find your court’s rules by searching your county name plus “family court local rules exhibits,” or ask the clerk. When the local rule and general advice disagree, follow the local rule.

What to leave out

• Anything you got by logging into the other parent’s email, phone or social media accounts. That can be illegal, and it makes you the story.
• Letters or videos made by your child about which parent they prefer. Asking a child to take sides puts them in the middle, and judges and evaluators see it that way.
• Old fights that have nothing to do with parenting.
• Ten exhibits proving the same point. Pick the clearest two.

Your checklist

• Your state’s best-interest factors on one page, with what you need to show under each.
• An evidence log with source and date for every item.
• Originals stored safely; scanned backups.
• Full text threads saved, with screenshots that show number, date and time.
• Recording laws in your state checked before any recording.
• One-page factual timeline cross-referenced to the log.
• Binder with index and tabs; exhibits labeled per local rules; right number of copies.
• Exhibit and witness deadlines on your calendar.
• Sensitive numbers redacted.

The best binder makes it easy for a stranger to see what your child’s days look like with you. Build it for that reader.

This site is not a law firm and this is not legal advice. Evidence rules, recording laws and court procedures differ by state and county, so check your state’s court self-help pages or talk with a family lawyer about your case.

Related: How to Serve Child Custody Papers