Sienna Montessori School
Licensed Center in Missouri City, Texas. License #554152, issued April 3, 2001.
- Address
- 10010 Steep Bank Trce, Missouri City, TX 77459
- Phone
- (281) 778-2223
- Licensed capacity
- 168 children
- Licensed for
- Infant, Toddler, Pre-Kindergarten, School
- Hours
- 06:30 AM-06:30 PM
- Days
- Mon, Tue, Wed, Thu, Fri
- Child care subsidies
- Not accepted
Programs listed with the state: School Age Care, Before School Care, Meals Provided, After School Care, Snacks Provided, Drop-In Care, Skill Classes, Transportation to/from School, Field Trips.
Openings
This program has not told us about its openings. We only publish what a program confirms itself, so there is nothing here yet. Ring them to ask.
Texas Rising Star
Texas Rising Star 3-star of a possible 4
A quality rating the state awards after an on-site assessment. Four stars is the highest.
In effect since October 20, 2025. From the state's provider report of June 16, 2026.
Where this is
A map of this address loads when you ask for it. Nothing is requested from the map host until then, so opening this page does not tell anyone which program you were reading about.
The pin is where the US Census geocoder placed this address. About one in eight is interpolated along a street rather than resolved to a building, so treat it as the right block rather than the right doorway. How we source this.
What inspectors checked
Texas HHSC records how many individual standards it evaluated in each area of the rules, and how many it found violated. Across 22 areas it checked 3,730 standards at Sienna Montessori School between December 3, 2021 and September 10, 2026 and recorded 25 violations. Those correspond to the citations listed above that were recorded from 2021 onward; anything older than that is in the citation list but not in these counts.
The 22 areas, one by one
| Area of the rules | Visits | Standards checked | Violated |
|---|---|---|---|
| Scope, administration, and communication | 3 | 358 | 1 |
| Record keeping | 3 | 326 | 6 |
| Personnel | 3 | 441 | 0 |
| Ratios and group sizes | 3 | 162 | 0 |
| Activities | 3 | 104 | 0 |
| Infants | 3 | 267 | 5 |
| Toddlers | 3 | 66 | 0 |
| Pre-kindergarten | 3 | 55 | 0 |
| School-age | 3 | 60 | 0 |
| Discipline | 3 | 60 | 0 |
| Naptime | 3 | 36 | 0 |
| Field trips | 3 | 33 | 0 |
| Get well care | 3 | 81 | 0 |
| Nighttime care | 3 | 39 | 0 |
| Nutrition and food care | 3 | 134 | 0 |
| Health practices | 3 | 338 | 1 |
| Safety practices | 3 | 220 | 0 |
| Physical facilities | 3 | 224 | 0 |
| Outdoor safety | 3 | 288 | 0 |
| Pools | 3 | 78 | 0 |
| Fire safety | 3 | 203 | 0 |
| Transportation | 3 | 132 | 1 |
The table adds up to 3,705 of those standards. The remaining 25, including 11 of the violations, were recorded under the state's own catch-all heading, “Individual Standards Evaluated”, which names no area. They are reported here rather than folded into an area above, because the state did not say which area they belong to and we are not going to decide for it.
A high number of standards checked is not a compliment and a low one is not a criticism: how many apply depends on a program's size, its ages served and what the inspector was there to look at. We publish the two counts the state published and do not turn them into a score. This data begins in 2021, which is later than the inspection history above it.
Ask about an opening
This goes to Sienna Montessori School and nobody else. They reply to you directly: we do not sit in the middle of it, and we never pass your details on or sell them.
Tell me about new inspections
One short message each time Texas HHSC records an inspection here, saying that it happened and linking to the record. We do not tell you what the inspector found: a finding without whether it was corrected is misleading, and that pair belongs on the page rather than split across an email.
We ask for nothing but the address, and we send a confirmation first. Your list is never shown to this program, never sold, and every message has a link to stop. An inspection is routine: programs are visited on a schedule and after a complaint, and a visit is not a finding.
State inspection record
HHSC records 12 visits to this operation since October 2017, most recently on September 10, 2026, and 25 citations.
- 2High
- 9Medium High
- 10Medium
- 4Medium Low
Every citation below records a correction.
Citations
Showing all 25. Indented text is the inspector's own, reproduced verbatim.
- Medium High September 10, 2026 Correction verified September 18, 2026
746.5603(c): Types of Vehicles Used to Transport Children - Be Maintained Safely
A seatbelt buckle at the back of a bus was observed to be broken.
- Medium September 15, 2025 Correction verified September 16, 2025
746.901(2): Required Personnel Records- Meets Requirements
3 out of 10 staff records evaluated did not have documentation showing education credentials.
- High September 15, 2025 Correction verified September 16, 2025
746.605(11): Required Admission Information - Emergency Medical Authorization
5 out of 10 children's records evaluated did not have completed the authorization for emergency medical attention.
- Medium September 15, 2025 Correction verified September 16, 2025
746.603(a)(3): Children's Records - Health Statement
5 out 10 children's records evaluated did not have a health statement in their file.
- Medium Low September 15, 2025 Correction verified September 16, 2025
746.901(5): Required Personnel Records - Required Affidavit (Form 2912)
6 out of 10 files evaluated did not have the preemployment affidavit in the file.
- Medium September 15, 2025 Correction verified September 23, 2025
746.501(a)(20): Written Operational Policies - Parent Rights
7 out of 10 children's records evaluated did not have the parent rights form completed.
- Medium High September 15, 2025 Correction verified September 18, 2025
746.2409(a)(2): Safety Requirements for Cribs - Snug Fitting Sheets
Cribs that are being used by infants was observed to not have snug fitted sheets.
- Medium September 15, 2025 Correction verified September 16, 2025
746.2421(b): Written Feeding Instructions - Review and Update Every 30 Days
Three infants did not have an updated feeding instruction that is required to be updated every 30 days.
- Medium High September 15, 2025 Correction verified September 29, 2025
746.3407(9): Floors, ceilings and Walls in Good Repair and Clean
Two bathrooms in two different classrooms were observed to have the based board peeling and detached from the wall.
- Medium Low September 15, 2025 Correction verified September 16, 2025
746.901(4): Required Personnel Records - Required Affidavit (Form 2985)
2 out 10 staff records evaluated did not have a notarized affidavit in the file
- Medium Low January 21, 2025 Correction verified January 28, 2025
746.303(b): Report Number of Employees
A review of the Employees Who Left Employment in 2024 data revealed that the center had not reported the number of employees who left employment in 2024 by January 15, 2025, as required.
- Medium September 20, 2024 Correction verified October 4, 2024
746.1309(e): Documented Annual Training- Required Content
2 out of 5 staff files reviewed did not show that they had completed the required health and safety topics in their most recently completed training year.
- Medium High September 20, 2024 Correction verified October 4, 2024
746.1315(b)(1): CPR Training and Recertification Adhere to Guidelines-skill based
5 out of 5 staff files reviewed showed caregivers and the director with online CPR certification that does not meet minimum standard requirements.
- Medium September 20, 2024 Correction verified September 23, 2024
746.501(a)(20): Written Operational Policies - Parent Rights
10 out of 10 children's files reviewed did not have proof that parents had received information related to parent's rights contained within the operational policies.
- Medium September 20, 2024 Correction verified September 23, 2024
746.603(a)(4): Children's Records - Immunizations
One child did not have a copy of their must current immunizations on file and was missing 3 required immunizations.
- Medium Low September 20, 2024 Correction verified September 23, 2024
746.901(5): Required Personnel Records - Required Affidavit (Form 2912)
2 caregivers hired within the last year did not have the pre-employment affidavit available for review in their file.
- Medium High September 20, 2024 Correction verified September 26, 2024
746.1301(a)(1)(A): Training Requirements for Employees, Caregivers, and Directors - Orientation
A caregiver hired 9/8/24 did not have proof that orientation had been completed within 7 days.
- Medium High September 20, 2024 Correction verified October 2, 2024
746.1301(a)(2)(A): Training Requirements for Employees, Caregivers, and Directors - Pre-Service Training
A caregiver hired 9/9/24 with no previous childcare experience did not have proof that 8 hours of preservice had been completed prior to being counted in ratio.
- Medium November 30, 2022 Correction verified December 1, 2022
746.603(a)(4): Children's Records - Immunizations
2 out of 10 records reviewed for children were missing immunization records.
- Medium High December 16, 2021 Corrected at inspection
746.2409(a)(2): Safety Requirements for Cribs - Snug Fitting Sheets
It was observed one infant was sleeping in the crib with mattress sheet that was not not snugly fitted in Mobile Infant classroom. NOTE: This was corrected, the caregiver fixed the fitted sheet during the inspection.
- Medium High December 3, 2021 Corrected at inspection
746.2419(6): Requirements for Feeding Infants - Label Bottles/Cups
Several water bottles were observed not being labeled with children name in the Non-Mobile Infants classroom; Red Room Primary Classroom. NOTE: This was corrected as the bottles were labeled with the children names during the inspection.
- Medium December 3, 2021 Correction verified December 28, 2021
746.801(3): Required Records Maintained and Made Available - Personnel and Training Records
The training record for one employee in Red Room classroom was not available for reviewed. The caregiver was hired since August 2021.
- High December 3, 2021 Correction verified December 16, 2021
746.2426: Infant May Not Sleep in a Restrictive Device
An 6 month old infant was observed sleeping in the bouncer during the inspection. NOTE: The infant was being removed from the bouncer during the inspection.
- Medium High December 3, 2021 Correction verified December 3, 2021
746.1301(7)(A): Training Requirements for Employees, Caregivers, and Directors - Transportation Training
The transportation training for one caregiver was not available for review.
- Medium December 3, 2021 Correction verified December 13, 2021
746.2421(b): Written Feeding Instructions - Review and Update Every 30 Days
Two Infant feeding Instruction Forms for two Infants ages 11mo and 13mo were observed not being updated. The last forms was observed completed by parents since September 2021.
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About this record
Every figure on this page comes from the Texas HHSC Child Care Regulation open data published at data.texas.gov, reproduced as the state recorded it. We do not grade, score or rank programs. A citation is a finding by a state inspector on a given day; it is not a judgment about a program today, and the correction status beside each one is part of the record. This page reflects data retrieved on November 8, 2026. Full methodology.
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