School District · Texas
San Isidro Independent School District
📍 Delmita, TX · Starr County · NCES LEAID 4838910
District Contact & InformationSource: NCES CCD 2024–25
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Grades Served
Pre-K – 12th
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District Mailing Address
P O BOX 10, SAN ISIDRO, TX 78588
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NCES District ID (LEAID)
4838910
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District Type
Public School District
Zip Codes Served by San Isidro Independent School District3 zip codes
Frequently Asked Questions
What zip codes are in San Isidro Independent School District?▼
San Isidro Independent School District serves 3 zip codes: 78536, 78588, 78591. Zip codes and district boundaries do not line up exactly, so confirm your exact address with the district office before you rely on an assignment.
How is San Isidro Independent School District rated?▼
San Isidro Independent School District has an overall rating of 4 out of 10 (Below Average), based on the share of students proficient in reading and math on state assessments (NCES EDFacts). That places it in the 35th percentile among Texas school districts. Ratings are percentile-ranked within Texas only and are not comparable across states.
How many students attend San Isidro Independent School District?▼
The NCES Common Core of Data directory reports enrollment of 181 students across 2 schools for San Isidro Independent School District.
What grades does San Isidro Independent School District serve?▼
San Isidro Independent School District is listed in the NCES directory as serving grades Pre-K – 12th.
How do I contact San Isidro Independent School District?▼
You can reach San Isidro Independent School District by phone at (956)481-3110 or by mail at P O BOX 10, SAN ISIDRO, TX 78588. Contact details come from the NCES district directory and are the best way to confirm which school your address is assigned to.
About San Isidro Independent School District
San Isidro Independent School District is a public school district serving 3 zip codes in Texas, primarily in Starr County. It carries an overall rating of 4/10 (Below Average), the 35th percentile among Texas districts. That rating reflects the share of students proficient in reading and math on state assessments (NCES EDFacts, 2021–22 for most districts with a 2017–18 fallback for the rest) and is ranked only against other Texas districts — scores are not comparable between states. Directory details on this page come from the NCES Common Core of Data, 2024–25.
District boundaries are address-specific and do not follow zip code lines exactly — a single zip code can
be split between two or more districts. Use the zip codes listed above as a starting point, then confirm your
assignment with the district office at (956)481-3110 before making a housing decision.