| District | City | Rating | Students | Schools | Grades | Zip Codes |
|---|---|---|---|---|---|---|
| New Providence Borough School District | New Providence | 10/10 Excellent · 97th pct | 2,382 | 4 | PK–12 | 1 |
| Mountainside Borough School District | Mountainside | 10/10 Excellent · 96th pct | 747 | 2 | PK–8 | 1 |
| Summit Public Schools | Summit | 10/10 Excellent · 94th pct | 3,950 | 9 | PK–12 | 1 |
| Westfield Public Schools | Westfield | 10/10 Excellent · 91st pct | 5,992 | 10 | PK–12 | 1 |
| Berkeley Heights Township School District | Berkeley Heights | 9/10 Excellent · 86th pct | 2,479 | 6 | PK–12 | 1 |
| Cranford Township School District | Cranford | 9/10 Excellent · 86th pct | 3,745 | 7 | PK–12 | 1 |
| Scotch Plains-Fanwood Regional School District | Fanwood | 9/10 Excellent · 82nd pct | 5,646 | 8 | PK–12 | 2 |
| Clark Township School District | Clark | 8/10 Good · 73rd pct | 2,267 | 5 | PK–12 | 1 |
| Springfield Township School District | Springfield | 7/10 Good · 69th pct | 2,236 | 5 | PK–12 | 1 |
| Garwood Borough School District | Garwood | 7/10 Good · 62nd pct | 360 | 1 | PK–8 | 1 |
| Kenilworth Borough School District | Kenilworth | 5/10 Average · 40th pct | 1,473 | 2 | PK–12 | 1 |
| Winfield Township School District | Winfield Twp | 4/10 Below Average · 34th pct | 137 | 1 | PK–8 | 0 |
| Roselle Park Borough School District | Roselle Park | 4/10 Below Average · 33rd pct | 2,042 | 5 | PK–12 | 1 |
| Union Township School District | Union | 4/10 Below Average · 33rd pct | 7,775 | 10 | PK–12 | 2 |
| Elizabeth City School District | Elizabeth | 3/10 Below Average · 27th pct | 28,266 | 37 | PK–12 | 4 |
| Hillside Township School District | Hillside | 3/10 Below Average · 25th pct | 3,065 | 7 | PK–12 | 1 |
| Rahway City School District | Rahway | 3/10 Below Average · 20th pct | 4,155 | 6 | PK–12 | 1 |
| Linden City School District | Linden | 2/10 Poor · 12th pct | 6,125 | 11 | PK–12 | 1 |
| Roselle Borough School District | Roselle | 1/10 Poor · 7th pct | 2,922 | 7 | PK–12 | 1 |
| Plainfield City School District | Plainfield | 1/10 Poor · 6th pct | 10,097 | 14 | PK–12 | 3 |
How Union County compares
Together they enroll 95,861 students across 157 schools. The largest is Elizabeth City School District with 28,266 students. Districts here average 6.0/10, above the New Jersey average of 5.7/10. Ratings range from 1/10 to 10/10.
School Districts in Union County, New Jersey
Union County has 20 public school districts covering 26 zip codes. The top-rated district in Union County is New Providence Borough School District (10/10). Ratings are based on the share of students proficient in reading and math on state assessments (NJSLA 2024–25), ranked against all districts in New Jersey. Directory details come from NCES CCD 2024–25.
Enter your zip code on any page to confirm your exact district assignment — district boundaries are address-specific and may not follow county or city lines.
Frequently Asked Questions
How many school districts are in Union County, NJ?
20 school districts serve zip codes in Union County, NJ. This page lists each one with its rating, enrollment, grade span and the zip codes it covers.
What is the best-rated school district in Union County, NJ?
Of the districts serving Union County, New Providence Borough School District has the highest rating on this site at 10/10. That places it in the 97th percentile among New Jersey school districts.
How are these school district ratings calculated?
Each rating is the share of students scoring proficient or above on New Jersey reading and math assessments, ranked against other districts in New Jersey and converted to a 1–10 scale. Percentiles compare districts within New Jersey only, never across state lines.