Being new to Katy ISD or Lamar CISD means learning two systems at once: the home-buying process and your child’s school enrollment paperwork. Both need to line up before the first bell rings. If you’re relocating to Katy, Fulshear, or the surrounding Houston suburbs, your home’s address determines your child’s zoned campus. As a result, the two decisions are more connected than most families realize.
At The Jamie McMartin Group, we work with Houston-area buyers every week who are timing a home purchase around real deadlines, and school registration is one of the biggest. In this guide, we’ll walk through exactly what new Katy ISD and Lamar CISD families need to gather, when to start the process, and how your closing timeline can affect where your child lands on the first day of school.
Proof of residence, immunization records, birth certificate, having the right paperwork ready before the first day of school makes enrolling in Katy ISD go smoothly.
Quick Answer
New to Katy ISD or Lamar CISD? Here’s what you need in one place. Both districts require proof of residence, a birth certificate or passport, a government-issued ID for the registering parent or guardian, current immunization records, and the most recent report card or transcript. Each district confirms your zoned campus by home address through a free online locator tool, so it’s worth checking before you write an offer. Katy ISD’s 2026-2027 school year begins Wednesday, Aug. 12, 2026, and Lamar CISD’s begins Tuesday, Aug. 11, 2026. Families relocating this summer should build their closing date around those dates.
What Documents Do You Need to Enroll in Katy ISD or Lamar CISD?
Both districts ask for a similar core packet of documents when you register a new student. Because requirements are set at the district level and can be updated, always confirm the current list on the official registration page before your appointment. In general, plan to gather the following:
- Proof of residence, a current utility bill, lease agreement, or home purchase paperwork such as a closing disclosure or warranty deed.
- An official birth certificate or passport for the student.
- A government-issued photo ID for the parent or legal guardian completing registration.
- Current immunization records, legible in English.
- The most recent report card or transcript from the student’s previous school.
If you close on your home using a lease or purchase paperwork instead of a utility bill, both districts generally allow a short grace period, typically 30 days, to provide a utility bill afterward. However, expired or disconnected utility notices are not accepted, so keep a current bill on hand once service is active at your new address.
How Do You Find Your Zoned School Before You Buy?
Before you fall in love with a house, it’s worth confirming which campus it feeds into. Katy ISD’s Find My School tool and Lamar CISD’s School Finder both let you enter a specific address and see the zoned elementary, middle or junior high, and high school. Because attendance boundaries can split along a single street, two homes in the same neighborhood aren’t always zoned to the same campus.
If a home is new construction and its address doesn’t yet appear in the locator tool, that isn’t unusual. In that case, reach out directly to the district’s enrollment management office to confirm the zone before you finalize your decision. This is a step our team routinely helps buyers work through as part of the home search.
For a head start, search current Katy and Fulshear listings with The Jamie McMartin Group, and we’ll help you cross-reference attendance zones as you narrow down neighborhoods.
Before you write an offer, it’s worth knowing the zone, checking Katy ISD and Lamar CISD attendance boundaries on a map can shape where you decide to buy.
When Should You Start the Enrollment Process?
Registration for the 2026-2027 school year is open now in both districts, so there’s no reason to wait until closing day. Once you’re under contract, it’s a good time to start gathering documents. Immunization records and prior transcripts can take a few days to request from a previous school or pediatrician, so an early start prevents a last-minute scramble.
In Katy ISD, registration is completed entirely online through PowerSchool Registration. In Lamar CISD, families can submit documents online through Family Access or complete the process in person at the New Student Central Registration Center located at Lamar Junior High. Either way, submitting a complete document set the first time helps avoid delays, since incomplete uploads can push back your child’s official enrollment date.
What’s the 2026-2027 School Calendar for Katy ISD and Lamar CISD?
Both districts start earlier than the traditional late-August calendar many families expect. Here’s a side-by-side look at the key enrollment details for the year ahead:
| Enrollment Detail | Katy ISD | Lamar CISD (Fulshear) |
| First day of 2026-2027 school year | Wednesday, Aug. 12, 2026 | Tuesday, Aug. 11, 2026 |
| Online registration system | PowerSchool Registration | Family Access online enrollment |
| Attendance zone lookup tool | Find My School | School Finder |
| Proof of residence accepted | Utility bill, lease, or purchase paperwork (utility bill required within 30 days if using a lease or closing documents) | Utility bill, closing disclosure, warranty deed, mortgage statement, or lease |
Katy ISD also added a fall break to its 2026-2027 calendar, running Oct. 9 through 13, following community feedback. If your move is planned for that window, it’s worth factoring into your enrollment timeline as well.
What If Your Closing Date Lands After the First Day of School?
This is one of the most common questions we hear from relocating families. If your purchase is still pending when classes begin, Lamar CISD allows some families to enroll through an out-of-district transfer when a move into the district is expected within about six weeks of the start of school, supported by documentation such as a signed contract, lender approval, or a lease. Katy ISD handles similar situations on a case-by-case basis, so it’s best to contact the district’s registration office directly to confirm your options.
Because residency and transfer rules involve specific legal definitions, we recommend confirming your exact situation with the district’s enrollment office rather than relying on general guidance. Our team is also happy to help you sequence your offer, option period, and closing date around your target enrollment window.
An Agent’s Perspective on Timing Your Move
“Timing a home purchase around a school calendar can feel overwhelming, but it doesn’t have to be,” said Jamie McMartin, Realtor and founder of The Jamie McMartin Group. “We build enrollment deadlines into the closing timeline from day one, so families walk into the first day of school with everything already in place.”
Ready to Find Your Home in the Right Attendance Zone?
Whether you’re weighing Katy ISD versus Lamar CISD, or simply trying to close before the first day of school, our team can help you move through both processes at once. The Jamie McMartin Group works with Houston-area families every day on exactly this kind of timeline.
Contact The Jamie McMartin Group today, and let’s find a home that fits your family’s school zone, timeline, and budget.
Frequently Asked Questions
How do I know which school my child will attend before I buy a home in Katy or Fulshear?
Use Katy ISD’s Find My School tool or Lamar CISD’s School Finder and enter the exact address of any home you’re considering. Because zoning can change street by street, always check the specific property rather than assuming a neighborhood-wide zone.
Can I start Katy ISD or Lamar CISD registration before I close on my home?
Yes. You can begin gathering documents and even start the online registration process while your purchase is still under contract. You’ll typically need to confirm your final address with proof of residence once you close.
What if I’m building a new construction home and my address isn’t showing up in the school locator tool?
New addresses sometimes lag behind in a district’s system. Contact the district’s enrollment management office directly with your builder’s lot and street information, and they can confirm your zoned campus before the address is fully live online.
Do Katy ISD and Lamar CISD require the same enrollment documents?
Both districts ask for similar items: proof of residence, a birth certificate or passport, a parent or guardian ID, immunization records, and a recent report card or transcript. Exact formats and accepted document types can vary, so it’s worth checking each district’s current registration page.
What happens if we move after the school year has already started?
Both districts can typically still enroll your child, though the process may involve additional verification. Lamar CISD, for example, offers an out-of-district transfer option for families with a pending move. Contact the district’s registration office as soon as your move date is set so they can walk you through next steps.
