The Union School District operates six elementary schools (K-5) and two middle schools (6-8) in the greater San Jose, California, USA area. The district serves 4400 students. Confusingly, the district is not a union school district under California law; rather, it was named in honor of the Union Army when founded in 1863, during the American Civil War.
| Alta Vista Elementary School* | 454 | 19 | 19.4 | |
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| Athenour Elementary School | --- | -- | --- | |
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| Carlton Elementary School | 401 | 19 | 18.5 | |
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| Dartmouth Middle School | 916 | 41.6 | 21.1 | |
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| Guadalupe Elementary School | 452 | 15 | 22.6 | |
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| Lietz Elementary School | 473 | 20 | 18.7 | |
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| Lone Hill Elementary School | --- | --- | ||
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| Noddin Elementary School | 624 | 25 | 20.9 | |
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| Oster Elementary School | 459 | 13 | 22.2 | |
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| Union Middle School | 803 | 35.8 | 22.2 | |
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For budgetary reasons, the District closed Athenour and Lone Hill schools in 2004, after a local property tax initiative failed to pass.