• Welcome to San Isidro ISD!
    San Isidro Independent School District is a Texas Education Agency Region One 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."


  • Essay Competition Sponsored by TSSWCB

    The Texas State Soil & Water Conservation Board (TSSWCB) would like to invite you to take part in our 2019 Texas Conservation Awards Program by participating in our essay writing contest.

    Essay Topic: “Life in Soil: Dig Deeper” Maximum of 500 words

    Category: Ages 14- 18 

    Why participate?  This year’s participating 1st Place High School Senior local winner will receive a $500 Scholarship on behalf of the Starr County Soil & Water Conservation District. 

    Contest Flyer

    Invitation Letter and Rules

    Comments (-1)
  • Sync Our School Calendar to your Smart Phone
    Stay up to date with school events by keeping our school calendar on your mobile device.
    Comments (-1)
  • Online Access to Student Grades
    Get your kids' grades online Today!
    Comments (-1)