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Obsidian Middle

Public Grades 6-8

2617^th

SchoolDigger Rank ?

of 2,740 California Middle Schools

Better than 4% of California middle schools

Summary

Obsidian Middle serves grades 6–8 and enrolls 590 students in Clearlake, in the Konocti Unified area. It is the largest of the four nearby schools compared here. Chronic absenteeism is a major concern: in 2025–2026, it was 43% at Obsidian, compared with 18% statewide and an average of 21% at nearby Terrace Middle, Middletown Middle and Mountain Vista Middle. The central finding is that Obsidian faces both high absenteeism and low proficiency across all three tested subjects.

Science is Obsidian’s relative strength, though results remain well below state levels: proficiency was 13% in science, 18% in English language arts (ELA) and 8% in math, versus 36%, 49% and 38% statewide, respectively. Obsidian’s science result was less than 1 point below its district, while ELA and math were 2 points below; compared with nearby-school averages, it was 2 points lower in science and 9 points lower in both ELA and math. Obsidian exceeded only Mountain Vista in all-grades results. Its eighth-grade performance is a local bright spot: it ranked highest among the four schools in ELA (19.3% versus Terrace’s 18.9%) and second in math and science. Those eighth-grade results were still below state benchmarks.

Results have improved overall since 2023–2024—by 2 percentage points in ELA, 2 in math and 4 in science—but the state gap has not narrowed consistently. In the latest year, ELA fell 3 points, while math rose 1 and science rose 5. SchoolDigger places Obsidian in the state’s 4th percentile for 2025–2026, with 0 stars; its rank is higher than Mountain Vista’s 2nd percentile but below Terrace’s 9th and Middletown’s 43rd. In 2024–2025, Obsidian’s student–teacher ratio was 22.4, the highest among these schools, and 77% of students were free/reduced lunch eligible. SchoolDigger’s statewide effectiveness ranking for Special Education Students fell from the 28th percentile in 2023–2024 to the 8th in 2025–2026, while the overall ranking moved from the 6th to the 4th percentile. For English Language Learner Students, the only reported result was the 23rd percentile in 2023–2024, compared with the school’s overall 6th percentile that year. No sixth-grade test results are provided, so grade-level comparisons are incomplete.

590

Students ?

22.4

Student/teacher ratio ?

76.9%

Free/reduced lunch eligible (2024-25) ?

All students in California receive free school meals.

15850-A Dam Road Extention
Clearlake, CA 95422

(707) 994-6447

District: Konocti Unified

Racial breakdown:

Hispanic:

52.7%

White:

34.9%

Two or more races:

6.8%

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At a glance

▬ Ranking trend: Holding steady — 6th percentile in 2024 → 4th in 2026

Worth a look

!Test scores below the California average (13% vs 42% meeting standards)

!In the lower quartile statewide (4th percentile)

!High chronic absenteeism (43% vs 18% California)

Students meeting standards (2025-2026) ?

This school13%

District avg15%

California avg42%

2,617^th of 2,740

California public middle schools ?

Bottom 4%▼ down 1 pts since 2024

See the entire ranking list of California Middle Schools →

★★★★★

SchoolDigger rating ?

1471^st of 1,530Konocti Unified among California districts

Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	California percentile	Rating
2026	9.4	2617 of 2740	4.5%	☆☆☆☆☆
2025	11.0	2588 of 2761	6.3%	☆☆☆☆☆
2024	11.3	2619 of 2783	5.9%	☆☆☆☆☆

English Language Learner

Year	Avg score	Statewide rank	California percentile	Rating
2024	31.7	1139 of 1478	22.9%	★☆☆☆☆

Female

Year	Avg score	Statewide rank	California percentile	Rating
2026	7.3	2470 of 2516	1.8%	☆☆☆☆☆
2025	9.5	2446 of 2533	3.4%	☆☆☆☆☆
2024	9.1	2492 of 2551	2.3%	☆☆☆☆☆

Hispanic

Year	Avg score	Statewide rank	California percentile	Rating
2026	9.9	2267 of 2357	3.8%	☆☆☆☆☆
2025	10.4	2295 of 2395	4.2%	☆☆☆☆☆
2024	11.4	2291 of 2388	4.1%	☆☆☆☆☆

Homeless

Year	Avg score	Statewide rank	California percentile	Rating
2026	16.8	410 of 442	7.2%	☆☆☆☆☆
2025	22.3	416 of 477	12.8%	★☆☆☆☆

Low Socio Economic Status

Year	Avg score	Statewide rank	California percentile	Rating
2026	10.9	2401 of 2529	5.1%	☆☆☆☆☆
2025	13.4	2357 of 2542	7.3%	☆☆☆☆☆
2024	12.9	2424 of 2579	6.0%	☆☆☆☆☆

Male

Year	Avg score	Statewide rank	California percentile	Rating
2026	11.6	2350 of 2514	6.5%	☆☆☆☆☆
2025	13.0	2327 of 2534	8.2%	☆☆☆☆☆
2024	14.3	2317 of 2552	9.2%	☆☆☆☆☆

Migrant

Year	Avg score	Statewide rank	California percentile	Rating
2026	17.9	98 of 106	7.5%	☆☆☆☆☆
2025	17.4	86 of 95	9.5%	★☆☆☆☆
2024	15.7	89 of 94	5.3%	☆☆☆☆☆

Multi-racial

Year	Avg score	Statewide rank	California percentile	Rating
2026	3.5	715 of 735	2.7%	☆☆☆☆☆
2025	5.5	699 of 726	3.7%	☆☆☆☆☆
2024	3.8	688 of 701	1.9%	☆☆☆☆☆

Special Education

Year	Avg score	Statewide rank	California percentile	Rating
2026	20.6	1476 of 1605	8.0%	☆☆☆☆☆
2025	23.5	1337 of 1566	14.6%	★☆☆☆☆
2024	29.5	1114 of 1552	28.2%	★☆☆☆☆

White

Year	Avg score	Statewide rank	California percentile	Rating
2026	3.6	1461 of 1490	1.9%	☆☆☆☆☆
2025	5.2	1475 of 1520	3.0%	☆☆☆☆☆
2024	5.2	1492 of 1537	2.9%	☆☆☆☆☆

How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)

English Language Learner (2024)23rd percentile+17 vs school

Special Education (2026)8th percentile+4 vs school

Migrant (2026)8th percentile+3 vs school

Homeless (2026)7th percentile+3 vs school

Male (2026)7th percentile~ school

Low Socio Economic Status (2026)5th percentile~ school

Hispanic (2026)4th percentile~ school

Multi-racial (2026)3rd percentile~ school

White (2026)2nd percentile-3 vs school

Female (2026)2nd percentile-3 vs school

By subject vs California (2025-2026) ?

English Language Arts/Literacy18%-31 vs state

Science13%-23 vs state

Mathematics8%-31 vs state

★

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Schools Near Obsidian Middle

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Ranking:

E Elementary M Middle H High A Alternative P Private

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Finance All

School													Students/Teachers											Ranking (2026)				Ranking (2025)				CAST Science (2026)			Smarter Balanced Assessments English Language Arts/Literacy (2026)					Smarter Balanced Assessments Mathematics (2026)					Per Pupil Expenditures (2025)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/reduced lunch (2024-25)	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2026)	Statewide Rank (2026)	State Percentile (2026)	SchoolDigger Rating (2026)	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	Rank Change from Previous Year	CAST Science 5th Grade	CAST Science 8th Grade	CAST Science All Grades	Smarter Balanced Assessments English Language Arts/Literacy 5th Grade	Smarter Balanced Assessments English Language Arts/Literacy 6th Grade	Smarter Balanced Assessments English Language Arts/Literacy 7th Grade	Smarter Balanced Assessments English Language Arts/Literacy 8th Grade	Smarter Balanced Assessments English Language Arts/Literacy All Grades	Smarter Balanced Assessments Mathematics 5th Grade	Smarter Balanced Assessments Mathematics 6th Grade	Smarter Balanced Assessments Mathematics 7th Grade	Smarter Balanced Assessments Mathematics 8th Grade	Smarter Balanced Assessments Mathematics All Grades	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Obsidian Middle	Public	6-8	15850-A Dam Road Extention	Clearlake	95422	Lake County	Konocti Unified	No	(n/a)	No	(n/a)	(707) 994-6447	590	26	22.4	76.9%	206 (34.9%)	17 (2.9%)	311 (52.7%)	3 (0.5%)	13 (2.2%)	0 (0.0%)	40 (6.8%)	9.4	2617^th of 2740 public middle schools	4.5%		11	2588^th of 2761 public middle schools	6.3%	29		13.0	13.0			17.5	19.3	18.4			6.5	8.7	7.6
Mountain Vista Middle	Public	6-8	5081 Konocti Rd.	Kelseyville	95451	Lake County	Kelseyville Unified	No	(n/a)	No	(n/a)	(707) 279-4060	405	19	21.3	70.4%	153 (37.8%)	3 (0.7%)	204 (50.4%)	1 (0.2%)	12 (3.0%)	0 (0.0%)	30 (7.4%)	7.5	2674^th of 2740 public middle schools	2.4%		12.9	2521^st of 2761 public middle schools	8.7%	153		7.6	7.6		16.5	11.6	17.8	15.2		9.9	3.6	7.6	7.0	$17,116	$1,845	$15,271
Middletown Middle	Public	6-8	15846 Wardlaw St.	Middletown	95461	Lake County	Middletown Unified	No	(n/a)	No	(n/a)	(707) 987-4160	320	15	20.9	53.4%	185 (57.8%)	3 (0.9%)	106 (33.1%)	2 (0.6%)	5 (1.6%)	0 (0.0%)	19 (5.9%)	38	1557^th of 2740 public middle schools	43.2%		42.4	1417^th of 2761 public middle schools	48.7%	140		19.8	19.8		44.4	43.9	34.4	41.4		34.8	30.7	22.5	29.9	$11,712	$341	$11,371
Terrace Middle	Public	5-8	250 Lange St.	Lakeport	95453	Lake County	Lakeport Unified	No	(n/a)	No	(n/a)	(707) 262-3007	370	21	17.2	78.9%	169 (45.7%)	6 (1.6%)	125 (33.8%)	4 (1.1%)	42 (11.4%)	1 (0.3%)	22 (5.9%)	13.1	2493^rd of 2740 public middle schools	9.0%		13.1	2514^th of 2761 public middle schools	8.9%	21	23.5	12.5	17.9	29.4	30.0	20.7	18.9	24.8	13.1	15.7	11.0	9.0	12.2	$13,265	$993	$12,272
Lakeport Community Day	Public	6-10	2508 Howard Ave.	Lakeport	95453	Lake County	Lakeport Unified	No	(n/a)	No	(n/a)	(707) 262-3013	0			—	0 ()	0 ()	0 ()	0 ()	0 ()	0 ()	0 ()								(n/a)														$1,596	$00	$1,596

Frequently Asked Questions about Obsidian Middle

What is the racial makeup of Obsidian Middle?

Students at Obsidian Middle are 53% Hispanic, 35% White, 7% Two or more races, 3% African American, 2% American Indian.

Is Obsidian Middle a good school?

Obsidian Middle ranks in the bottom 4.5% of California middle schools.

What district is Obsidian Middle in?

Konocti Unified

How many students attend Obsidian Middle?

In the 2024-25 school year, 590 students attended Obsidian Middle.

Rate Obsidian Middle!

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Schools in Clearlake, CA

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Latest California data All new data »

2024–25 school spending data (updated)NewNov 2, 2026

2013–14 through 2024–25 immunization rates (updated)Oct 19, 2026

2025–26 attendance data, dropout rates & graduation ratesOct 15, 2026

2025–26 CAST, CSA Spanish & Smarter Balanced Assessments scoresOct 15, 2026

SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the California Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.