Welcome to San Isidro ISD!
San Isidro Independent School District is a Texas Education Agency "Recognized" school district located in Starr County, Texas. Our School District encompasses 275 square miles of our rural farming community centered around San Isidro, TX.
San Isidro ISD serves 263+ students at our elementary/jr. high school and high school campus.
The vision of the San Isidro ISD is that "San Isidro ISD will be an exemplary educational community dedicated to the highest standards of quality at all levels and in all areas of endeavor. All parents, community members, and district employees, respecting and valuing each other, will be committed to providing all students with an education which enables them to live successfully in an ever-changing society."


  • Flu Shots Flu Vaccinations at San Isidro ISD
    Flu vaccinations will be provided for students, staff, and community members on Tuesday, November 25th from 9:45 am - 1:30 pm in the school library. Call Nurse Requenez for more information at (956) 481-3113.
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    SantClaus will be taking pictures with your child(ren) at San Isidro ISD on Tuesday, November 25th.  Brothers and sisters can be photographed together with Santa, however, there will be a limit of 3 people in the photograph.  Only those bringing paid order forms will be photographed.  Please send with your child the paid order form on or before November 25th. For further information on pictures with Santa, please contact Mrs. Roxana Elizondo at (956) 481-3110 ext. 123.
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  • Sync Our School Calendar to your Smart Phone
    Stay up to date with school events by keeping our school calendar on your mobile device.
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  • Online Access to Student Grades
    Get your kids' grades online Today!
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