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Schools in Zip Code 83323

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At a glance

Schools

1,028

Students

Top rankedDeclo Junior High School78^th of 174 Idaho middle schools

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Biggest riser

Declo Senior High School up 10 spots statewide this year

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Summary:

Zip code 83323 in Declo, Idaho, is served by three public schools—Declo Elementary School (PK-5), Declo Junior High School (6-8), and Declo Senior High School (9-12)—which together enroll 1,028 students and belong to the Cassia County Joint District, a district ranked 64th out of 101 Idaho districts. The three schools vary noticeably in performance, attendance, and trends, so parents will find meaningful differences depending on the grade level.

Declo Junior High School stands out as the strongest academic performer overall, particularly in math, where 51.5% of students are proficient compared to 43.1% statewide; its 6th grade math proficiency of 63.6% is well above the state average. Declo Senior High School shines in English Language Arts, with 76.5% proficiency on the End of Course exam, far exceeding both the district and state, and it also posts an exceptionally low chronic absenteeism rate of 3.1%. However, the high school's math (23.5%) and science (35.3%) proficiency lag behind state averages. Declo Elementary School is the biggest concern: its state ranking fell from the 59th percentile in 2023-2024 to the 28th percentile in 2025-2026, with 5th grade math (24.7%) and science (28.8%) dramatically below state levels.

Attendance is a bright spot across all three schools, with chronic absenteeism below district and state averages. Graduation at Declo Senior High School sits at 82.5%, matching the state average despite strong ELA scores. Declo Elementary School serves a higher share of economically disadvantaged students (45.7% free/reduced lunch) and has the largest student-teacher ratio (23.2), which may be relevant to its decline. The middle school is the most consistent performer, beating the district in every subject, while the high school offers a strong literacy focus but needs more emphasis on STEM. Parents in this area should note that the district's 2-star rating masks real pockets of strength, especially at the junior high, and should investigate the notable drop in elementary performance and the mismatch between weak 5th-grade math and strong 6th-grade math at the junior high.

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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)				ISAT Math (2026)								ISAT Science (2026)			ISAT English Language Arts (2026)								Per Pupil Expenditures (2019)
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/Discounted Lunch Recipients	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	ISAT Math 3rd Grade	ISAT Math 4th Grade	ISAT Math 5th Grade	ISAT Math 6th Grade	ISAT Math 7th Grade	ISAT Math 8th Grade	ISAT Math End of Course	ISAT Math All Grades	ISAT Science 5th Grade	ISAT Science 8th Grade	ISAT Science End of Course	ISAT English Language Arts 3rd Grade	ISAT English Language Arts 4th Grade	ISAT English Language Arts 5th Grade	ISAT English Language Arts 6th Grade	ISAT English Language Arts 7th Grade	ISAT English Language Arts 8th Grade	ISAT English Language Arts End of Course	ISAT English Language Arts All Grades	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Declo Elementary School	Public	PK, KG-5	120 East Main Street	Declo	83323	Cassia County	Cassia County Joint District	No	No	(n/a)	Yes	(208) 654-2391	453	20	23.2	45.7%	368 (81.2%)	3 (0.7%)	80 (17.7%)	0 (0.0%)	0 (0.0%)	2 (0.4%)	0 (0.0%)	30.9	249^th of 346 public elementary schools	28.0%		58.3	127^th of 337 public elementary schools	62.3%	122	49.4	49.4	24.7					41.5	28.8			54.4	44.2	37.0					45.4	$7,859	$1,149	$6,711
Declo Senior High School	Public	9-12	505 East Main Street	Declo	83323	Cassia County	Cassia County Joint District	No	No	(n/a)	No	(208) 654-2030	326	17	19.4	35.0%	256 (78.5%)	1 (0.3%)	67 (20.6%)	1 (0.3%)	0 (0.0%)	0 (0.0%)	1 (0.3%)	46	65^th of 122 public high schools	46.7%		36.6	75^th of 112 public high schools	33.0%	10							23.5				35.3							76.5		$8,583	$732	$7,852
Declo Junior High School	Public	6-8	205 East Main Street	Declo	83323	Cassia County	Cassia County Joint District	No	No	(n/a)	Yes	(208) 654-9960	249	14	18.0		190 (76.3%)	0 (0.0%)	58 (23.3%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1 (0.4%)	50.1	78^th of 174 public middle schools	55.2%		51.7	69^th of 166 public middle schools	58.4%	9				63.6	40.5	50.7		51.5		36.6					67.5	46.8	45.1		53.3	$7,444	$670	$6,774

Cities Near Zip Code 83323

City	Distance	# of Schools	Statewide Rank
Declo	0.11 mi	3	63^rd
Heyburn	6.84 mi	2	102^nd
Rupert	7.44 mi	8
Albion	7.7 mi	1
Burley	8.05 mi	9	96^th

See the top ID Idaho cities

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