School District · South Dakota
Webster School District 18-5
📍 Grenville, SD · Day County · NCES LEAID 4676990
District Contact & InformationSource: NCES CCD 2024–25
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Grades Served
Pre-K – 12th
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District Mailing Address
102 E 9th Ave, Webster, SD 57274
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NCES District ID (LEAID)
4676990
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District Type
Public School District
Zip Codes Served by Webster School District 18-54 zip codes
Frequently Asked Questions
What zip codes are in Webster School District 18-5?▼
Webster School District 18-5 serves 4 zip codes: 57239, 57261, 57272, 57274. 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 Webster School District 18-5 rated?▼
Webster School District 18-5 has an overall rating of 9 out of 10 (Excellent), based on the share of students proficient in reading and math on state assessments (NCES EDFacts). That places it in the 88th percentile among South Dakota school districts. Ratings are percentile-ranked within South Dakota only and are not comparable across states.
How many students attend Webster School District 18-5?▼
The NCES Common Core of Data directory reports enrollment of 551 students across 3 schools for Webster School District 18-5.
What grades does Webster School District 18-5 serve?▼
Webster School District 18-5 is listed in the NCES directory as serving grades Pre-K – 12th.
How do I contact Webster School District 18-5?▼
You can reach Webster School District 18-5 by phone at (605)345-3548 or by mail at 102 E 9th Ave, Webster, SD 57274. Contact details come from the NCES district directory and are the best way to confirm which school your address is assigned to.
About Webster School District 18-5
Webster School District 18-5 is a public school district serving 4 zip codes in South Dakota, primarily in Day County. It carries an overall rating of 9/10 (Excellent), the 88th percentile among South Dakota 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 South Dakota 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 (605)345-3548 before making a housing decision.