Jefferson County School District No. R-1

GOLDEN, Colorado · 75,327 students · 165 schools

Enrollment

75,327

Schools

165

Location

GOLDEN, Colorado

COSMIQ projected accountability rating

Priority Improvement

on Colorado's tier accountability scale

Confidence 70% Data completeness 100% Based on 2023–24 data

This is an independent estimate generated by COSMIQ's open Rating Predictor from public math & reading proficiency — it is not an official Colorado rating, and states weight many additional factors.

How this is calculated →Run the live predictor →

Proficiency trend

Percent of students proficient on the state assessment.

School year	Math	Reading / ELA
2015–16	40.9%	50.3%
2016–17	41%	51.3%
2017–18	39.4%	51.2%

Where this district could improve

Math proficiency
Worth 50% of the formula; you're at 30% of max points.
ELA proficiency
Worth 50% of the formula; you're at 50% of max points.

Schools in this district

Lakewood High SchoolLAKEWOOD, CO 1,885 students Ralston Valley Senior High SchoolARVADA, CO 1,843 students Arvada West High SchoolARVADA, CO 1,840 students Chatfield High SchoolLITTLETON, CO 1,784 students Columbine High SchoolLITTLETON, CO 1,686 students Bear Creek High SchoolLAKEWOOD, CO 1,431 students Golden High SchoolGOLDEN, CO 1,416 students Dakota Ridge Senior High SchoolLITTLETON, CO 1,338 students Standley Lake High SchoolWESTMINSTER, CO 1,180 students Pomona High SchoolARVADA, CO 1,132 students D'Evelyn Junior/Senior High SchoolDENVER, CO 1,125 students Green Mountain High SchoolLAKEWOOD, CO 1,085 students Alameda International Junior/Senior High SchoolLAKEWOOD, CO 1,062 students Three Creeks K-8ARVADA, CO 1,026 students Wheat Ridge High SchoolWHEAT RIDGE, CO 970 students Drake Junior High SchoolARVADA, CO 957 students Evergreen High SchoolEVERGREEN, CO 954 students Bear Creek K-8 SchoolLAKEWOOD, CO 931 students Summit Ridge Middle SchoolLITTLETON, CO 909 students Conifer Senior High SchoolCONIFER, CO 821 students Dunstan Middle SchoolLAKEWOOD, CO 818 students Lincoln Charter AcademyARVADA, CO 809 students Creighton Middle SchoolLAKEWOOD, CO 794 students Ken Caryl Middle SchoolLITTLETON, CO 747 students Jefferson Academy ElementaryBROOMFIELD, CO 733 students Bell Middle SchoolGOLDEN, CO 731 students Addenbrooke Classical Grammar SchoolLAKEWOOD, CO 728 students Arvada High SchoolARVADA, CO 705 students Manning Options SchoolGOLDEN, CO 670 students Oberon Middle SchoolARVADA, CO 668 students Fairmount Elementary SchoolGOLDEN, CO 633 students

Methodology & sources

NCES Common Core of Data (CCD) directory (as of 2018)
U.S. Dept. of Education EDFacts assessment results (as of 2018)
Colorado accountability framework (tier). Phase 1a uses math+ELA proficiency only with generic regime cutpoints; per-state component weights ship in Phase 1b. (as of 2026-05-27)

Embed & cite

Copy the HTML card below to embed this data on your site — the attribution link must remain. Or copy the plain-text citation for academic / editorial use.

Embed this data card

Paste this HTML anywhere on your page. The link back to COSMIQ is required and gives your readers the full profile.

<figure style="font-family:system-ui,-apple-system,sans-serif;border:1px solid #e2e8f0;border-radius:12px;padding:20px 22px;max-width:480px;background:#ffffff;color:#0f172a;margin:0;line-height:1.4"><div style="font-size:15px;font-weight:700">Jefferson County School District No. R-1</div><div style="font-size:13px;color:#64748b;margin-top:3px">GOLDEN, Colorado &middot; Public school district</div><div style="display:flex;flex-wrap:wrap;margin-top:14px"><div style="margin-right:20px"><div style="font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:#94a3b8;margin-bottom:2px">Enrollment</div><div style="font-size:22px;font-weight:700;color:#0f172a">75,327</div></div><div><div style="font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:#94a3b8;margin-bottom:2px">Projected Rating (tier)</div><div style="font-size:22px;font-weight:700;color:#0f172a">Priority Improvement</div></div></div><figcaption style="font-size:11px;color:#94a3b8;margin-top:14px;padding-top:12px;border-top:1px solid #f1f5f9">Data: NCES / EDFacts (2024 data) &middot; <a href="https://getcosmiq.app/schools/CO/jefferson-county-school-district-no-r-1" style="color:#0891b2;text-decoration:none" target="_blank" rel="noopener">View full profile on COSMIQ &#8594;</a></figcaption></figure>

Cite this page

COSMIQ. (2026). Jefferson County School District No. R-1 — school district profile. Retrieved August 23, 2026, from https://getcosmiq.app/schools/CO/jefferson-county-school-district-no-r-1

Learn anything, free.

COSMIQ is a free, voice-driven AI tutor for every learner. No credit card, ever.

Start learning free →

About this profile. COSMIQ is an independent, free AI tutoring service and is not affiliated with, endorsed by, or sponsored by Jefferson County School District No. R-1, Colorado, or any government education agency. All figures are drawn from public U.S. Department of Education data (NCES Common Core of Data and EDFacts). Any projected rating is an independent estimate, not an official score. COSMIQ does not collect or publish user reviews or ratings of schools.

Data last refreshed August 7, 2026.