| Metric | Grossmont Union High School District | National Average | Comparison |
|---|---|---|---|
| Student Enrollment | 16,738 | 3,544 | ↑ Larger than avg |
| Number of Schools | 15 | 7 | Varies by district |
| Per-Pupil Spending | $20,884/yr | $17,619/yr | ↑ 19% above avg |
| District Type | Public School District | Public District | — |
| Overall Rating | 6/10 — Average | — | Near average |
🔢 Show the math behind this rating
Ranked against 963 rated districts in CA → 56th percentile → 6/10.
Source: California Dept. of Education CAASPP Smarter Balanced, 2023–24 school year. Full methodology →
- Grossmont High — 2.0 mi · Grades 9–12 · 2,172 students
- Grossmont Middle College High — 2.8 mi · Grades 11–12 · 37 students
- Chaparral High — 3.6 mi · Grades 9–12 · 45 students
- MERIT Academy — 3.6 mi · Grades 9–12 · 68 students
- IDEA Center — 3.6 mi · Grades 9–12 · 127 students
- Mount Miguel High — 3.8 mi · Grades 9–12 · 1,539 students
- Monte Vista High — 3.9 mi · Grades 9–12 · 1,543 students
- El Cajon Valley High — 4.5 mi · Grades 9–12 · 1,701 students
About Grossmont Union High School District
Families in zip code 91942 (La Mesa, California) are assigned to Grossmont Union High School District for public education through 12th. This overview covers the district’s funding levels, scale, rating, and what to expect from the enrollment process if you’re moving to or within this zip code.
Understanding the 6/10 Rating
SchoolDistrictFinder rates Grossmont Union High School District 6 out of 10 — average among California public school districts. Our ratings are based on state assessment results — the share of students scoring proficient or above in reading and math, as reported in California’s CAASPP Smarter Balanced assessments (2023–24 school year). We average each district’s reading and math proficiency, then rank it against other districts in the same state to produce a 1–10 score. Because California is compared only against itself, the rating reflects how this district performs relative to its in-state peers.
Grossmont Union High School District falls near the middle of California on state assessment results, with reading and math proficiency close to the state median. Average-rated districts provide foundational public education, and many families find they deliver solid day-to-day learning — particularly when parents stay engaged. If you're considering this area, look beyond the overall rating: visit schools, talk to current parents, and research the specific school your child would attend. Average districts often have individual schools that significantly outperform the district mean.
Enrollment for Families in Zip Code 91942
Children in zip code 91942 are assigned to Grossmont Union High School District for public school enrollment, covering grades Kindergarten – 12th. School assignments are address-specific — your elementary, middle, and high school placements depend on your exact street address within zip code 91942, not just your neighborhood. Two homes on opposite ends of the same zip code may be assigned to different schools within the same district.
To confirm your specific school assignments, contact Grossmont Union High School District at (619)644-8000 or visit www.guhsd.net/. Typical enrollment documents include a signed lease or mortgage statement, birth certificate, state-required immunization documentation, and recent report cards or transcripts. If your child has an IEP or 504 plan, bring that documentation to enrollment — California districts are required to continue services within a reasonable period. Fall enrollment windows typically open in late winter or early spring; contact the district for exact dates and required steps.
School Districts and Home Values in La Mesa
Research consistently shows that district assignment affects residential property values. Because Grossmont Union High School District serves zip code 91942, district assignment still factors into home-pricing comparisons between zip code 91942 and neighboring areas. District boundaries are address-specific — verify the exact district assignment for any property you’re seriously considering rather than assuming based on the neighborhood. A single block can place two adjacent homes in different districts with different ratings and different annual property tax implications.
Use the property tax estimator on this page to calculate estimated annual tax obligations based on your target purchase price. In California, property taxes are a primary funding source for public schools — your tax payments directly support Grossmont Union High School District programs and staff. Understanding both district quality and the associated tax burden is essential financial due diligence before committing to any home in zip code 91942.
Data Sources and Accuracy
All district information on this page is sourced from the NCES Common Core of Data (CCD) 2024–2025, the U.S. Department of Education’s annual census of all public school districts — the same dataset used by researchers, journalists, and policymakers to analyze American public education. District boundaries, school assignments and phone numbers are updated annually when NCES publishes new data, typically in spring; per-pupil spending comes from the US Census Bureau's Annual Survey of School System Finances, released about two years after the fiscal year it covers. Always verify your specific school assignment and enrollment requirements directly with Grossmont Union High School District before making any housing or enrollment decision based on zip code 91942 data.