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Sage International School Of Boise

Q: Is Sage International School Of Boise a good school?

Sage International School Of Boise ranks 67 th of 350 Idaho alternative schools. SchoolDigger rates this school 4 stars out of 5.

Q: How many students attend Sage International School Of Boise?

In the 2024-25 school year, 1,033 students attended Sage International School Of Boise.

Q: What is the racial makeup of Sage International School Of Boise?

Students at Sage International School Of Boise are 76% White, 9% Hispanic, 8% Two or more races, 6% Asian.

Public, Charter, Alternative Grades K-12

67^th

SchoolDigger Rank ?

of 350 Idaho Alternative Schools

Better than 81% of Idaho alternative schools

Summary

Sage International School Of Boise is a K-12 public charter school in Boise, Idaho, serving 1,033 students as its own single-school district. For parents, the headline is consistent academic strength: the school outperforms the Idaho state average in every major subject. In the latest testing year, 58.0% of students were proficient in math, 61.8% in science, and 65.5% in English language arts—beating state averages by roughly 12 to 19 percentage points. With a student-teacher ratio of about 15.9 to 1, families get a more personalized setting than many area virtual charters, and the school achieves these results while spending a modest $6,733 per student.

Two areas stand out as particular strengths. Elementary math is exceptional, with 5th grade proficiency at 64.5% versus 42.2% statewide. High school science is the school's signature subject: 73.4% of students scored proficient on the End-of-Course exam, a stunning 32-point advantage over the state average. However, there is a noticeable transition dip in middle school. Sixth grade shows the weakest results, especially in English language arts, where proficiency falls to 52.3%, barely above the state's 51.5%. The concerning trend to monitor is the graduation rate, which fell from a high of 92.0% in 2023–2024 to 82.5% in 2024–2025—exactly matching the state average after years of exceeding it.

Comparisons to nearby schools give a nuanced picture. Sage comfortably outperforms virtual options like Idaho Virtual Academy and Inspire Virtual Charter School by 30-plus points in math and 20-plus points in ELA. Yet it trails top-tier hybrid charters such as Compass Public Charter School and Gem Prep: Meridian by 12–18 points in math. The most striking contrast is with its namesake, Sage International School Middleton, located nearly at the same address, which trails by 18–22 points in every subject. For families weighing priorities, Sage offers strong academics, smaller classes, and standout science, while acknowledging room for growth in middle school ELA.

1,033

Students ?

15.9

Student/teacher ratio ?

22.5%

Free/discounted lunch ?

457 East Parkcenter Boulevard
Boise, ID 83706-6501

(208) 343-7243

District: The Sage International School Of Boise A Public Charter Sch

Racial breakdown:

White:

75.6%

Hispanic:

9.2%

Two or more races:

7.8%

See top rated Idaho elementary schools

Compare Sage International School Of Boise to nearby alternative schools!

At a glance

▬ Ranking trend: Holding steady — 83rd percentile in 2018 → 84th in 2026

Strengths

✓Test scores above the Idaho average (62% vs 47% meeting standards)

✓Ranks in the top 19% of Idaho alternative schools

Worth a look

!Some student groups rank well below the school's overall statewide standing

Students meeting standards (2025-2026) ?

This school62%

District avg62%

Idaho avg47%

Elementary school

67^th of 350

Idaho public elementary schools ?

Top 19%▼ down 14 pts since 2016

From top 5% (2016) to top 19% (2026)

See the entire ranking list of Idaho Elementary Schools →

★★★★★

SchoolDigger rating ?

Middle school

44^th of 177

Idaho public middle schools ?

Top 25%▼ down 24 pts since 2016

From top 1% (2016) to top 25% (2026)

See the entire ranking list of Idaho Middle Schools →

★★★★★

SchoolDigger rating ?

High school

20^th of 124

Idaho public high schools ?

Top 16%▼ down 15 pts since 2016

From top 1% (2016) to top 16% (2026)

See the entire ranking list of Idaho High Schools →

★★★★★

SchoolDigger rating ?

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

Elementary school ranking

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Idaho percentile	Rating
2026	76.6	67 of 350	80.9%	★★★★☆
2025	71.7	81 of 337	76.0%	★★★★☆
2024	79.7	61 of 301	79.7%	★★★★☆
2018	69.3	72 of 254	71.7%	★★★★☆
2017	77.7	54 of 292	81.5%	★★★★☆
2016	91.0	12 of 240	95.0%	★★★★★
2015	88.2	19 of 226	91.6%	★★★★★

Female

Year	Avg score	Statewide rank	Idaho percentile	Rating
2024	81.4	10 of 69	85.5%	★★★★☆
2018	66.4	47 of 121	61.2%	★★★☆☆

Male

Year	Avg score	Statewide rank	Idaho percentile	Rating
2024	90.2	5 of 69	92.8%	★★★★★
2018	74.4	35 of 121	71.1%	★★★★☆

White

Year	Avg score	Statewide rank	Idaho percentile	Rating
2024	80.1	29 of 135	78.5%	★★★★☆

Middle school ranking

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Idaho percentile	Rating
2026	68.9	44 of 177	75.1%	★★★★☆
2025	75.8	29 of 166	82.5%	★★★★☆
2024	76.7	31 of 164	81.1%	★★★★☆
2018	71.7	25 of 100	75.0%	★★★★☆
2017	84.1	12 of 131	90.8%	★★★★★
2016	98.7	1 of 98	99.0%	★★★★★
2015	97.9	2 of 100	98.0%	★★★★★

Female

Year	Avg score	Statewide rank	Idaho percentile	Rating
2024	78.5	14 of 72	80.6%	★★★★☆
2018	59.3	19 of 60	68.3%	★★★☆☆

Male

Year	Avg score	Statewide rank	Idaho percentile	Rating
2024	87.9	7 of 72	90.3%	★★★★★
2018	60.8	21 of 60	65.0%	★★★☆☆

White

Year	Avg score	Statewide rank	Idaho percentile	Rating
2024	77.8	15 of 81	81.5%	★★★★☆

High school ranking

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Idaho percentile	Rating
2026	83.4	20 of 124	83.9%	★★★★☆
2025	85.3	12 of 112	89.3%	★★★★★
2024	85.8	17 of 159	89.3%	★★★★☆
2018	80.3	9 of 52	82.7%	★★★★☆
2017	91.8	4 of 101	96.0%	★★★★★
2016	96.2	1 of 76	98.7%	★★★★★

Female

Year	Avg score	Statewide rank	Idaho percentile	Rating
2024	81.4	12 of 66	81.8%	★★★★☆

Hispanic

Year	Avg score	Statewide rank	Idaho percentile	Rating
2024	85.5	7 of 55	87.3%	★★★★☆

Low Socio Economic Status

Year	Avg score	Statewide rank	Idaho percentile	Rating
2024	74.8	12 of 35	65.7%	★★★★☆

Male

Year	Avg score	Statewide rank	Idaho percentile	Rating
2024	90.2	6 of 66	90.9%	★★★★★

Multi-racial

Year	Avg score	Statewide rank	Idaho percentile	Rating
2024	69.4	5 of 6	16.7%	★★★☆☆

White

Year	Avg score	Statewide rank	Idaho percentile	Rating
2024	83.0	12 of 78	84.6%	★★★★☆

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)

Elementary school

Male (2024)93rd percentile+13 vs school

Female (2024)86th percentile+6 vs school

White (2024)79th percentile~ school

Middle school

Male (2024)90th percentile+9 vs school

White (2024)81st percentile~ school

Female (2024)81st percentile~ school

High school

Male (2024)91st percentile~ school

Hispanic (2024)87th percentile~ school

White (2024)85th percentile-5 vs school

Female (2024)82nd percentile-7 vs school

Low Socio Economic Status (2024)66th percentile-24 vs school

Multi-racial (2024)17th percentile-73 vs school

By subject vs Idaho (2025-2026) ?

English Language Arts66%+12 vs state

Science62%+19 vs state

Math58%+15 vs state

4.5

2 ratings · 1 written review

5★1

4★1

3★0

2★0

1★0

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What people are saying

by a citizen
Friday, June 8, 2018

GREAT SCHOOL
My time at sage was GREAT my parents made me switch schools, but I begged them to let me stay. most of the kids are GREAT and i have heard from a parent the REAL bad kids at sage are average kids at others. GREAT ACADEMICS the lessons are great giving opportunity to beginners AND advanced students. The only downfall is sage doesnt have as many courses as other schools. Overall Sage is a GREAT school and i suggest to anyone 6th grade plus, the reason why i did 6th grade is sage DOESNT have homework until middle school and in my experince it was terrible starting out the year having tons of homework compared to what i was getting before Close Quote

Schools Near Sage International School Of Boise

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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 ()				Ranking ()				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 (2021)	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score ()	Statewide Rank ()	State Percentile ()	SchoolDigger Rating ()	Average Standard Score ()	Statewide Rank ()	State Percentile ()	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 Science All Grades	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
Sage International School Of Boise	Public, Charter, Alternative	K-12	457 East Parkcenter Boulevard	Boise	83706	Ada County	The Sage International School Of Boise A Public Charter Sch	Yes	No	(n/a)	Yes	(208) 343-7243	1,033	65	15.9	22.5%	781 (75.6%)	8 (0.8%)	95 (9.2%)	58 (5.6%)	4 (0.4%)	6 (0.6%)	81 (7.8%)								(n/a)	65.8	65.8	64.5	52.7	55.4	53.1	51.6	58.0	62.2	53.7	73.4	61.8	60.3	64.0	72.4	52.3	78.8	59.4	71.9	65.5	$6,733	$277	$6,456
Sage International School Middleton	Public, Charter, Alternative	K-12	1513 Tyrell Lane #110	Boise	83644	Canyon County	Sage International School Middleton LLC	Yes	No	(n/a)	Yes	(208) 244-0577	482	30	16.0	21.5%	347 (72.0%)	3 (0.6%)	103 (21.4%)	6 (1.2%)	4 (0.8%)	1 (0.2%)	18 (3.7%)								(n/a)	38.0	58.8	36.0	< 21%	47.6	47.6		39.8	< 43%	54.8		47.5	< 32%	52.9	44.0	28.8	54.8	50.0		43.4
Inspire Virtual Charter School	Public, Charter, Alternative	K-12	9550 West Bethel Court	Boise	83709	Ada County	Inspire Academics Inc.	Yes	No	(n/a)	Yes	(208) 322-4002	1,210	37	32.3	29.9%	882 (72.9%)	10 (0.8%)	226 (18.7%)	16 (1.3%)	16 (1.3%)	3 (0.2%)	57 (4.7%)								(n/a)	26.7	< 23%	30.4	< 19%	22.6	< 26%	< 25%	23.0	< 37%	< 34%	< 45%	37.4	< 38%	< 40%	48.2	25.8	31.3	< 48%	≥ 55%	41.7	$6,932	$401	$6,531
Treasure Valley Math/Science	Public, Magnet, Alternative	4-12	6801 North Gary Lane	Boise	83714	Ada County	Boise Independent District	No	Yes	(n/a)	No	(208) 854-6800	4	10	.3	17.6%	4 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)								(n/a)
Idaho Virtual Academy	Public, Charter, Alternative	K-12	1965 South Eagle Road Suite 1	Meridian	83642	Ada County	Idaho Virtual Academy Inc.	Yes	No	(n/a)	Yes	(208) 322-3559	1,801	55	32.5	41.4%	1,331 (73.9%)	8 (0.4%)	326 (18.1%)	16 (0.9%)	12 (0.7%)	1 (0.1%)	107 (5.9%)								(n/a)	36.6	24.0	27.9	15.8	22.4	23.4	34.5	24.9	33.3	36.8	50.4	39.5	57.7	41.7	46.4	31.3	43.6	43.3	74.6	46.8	$8,430	$859	$7,571
Gem Prep: Online School	Public, Charter, Alternative	PK, KG-12	2750 East Gala Street	Meridian	83642	Ada County	Gem Prep: Online LLC	Yes	No	(n/a)	Yes	(208) 672-1155	378	13	29.0	25.2%	305 (80.7%)	3 (0.8%)	51 (13.5%)	3 (0.8%)	2 (0.5%)	4 (1.1%)	10 (2.6%)								(n/a)		86.8	≥ 64%	77.1	81.8	68.1	66.7	76.0	67.9	74.5	80.0	74.3	61.5	≥ 84%	75.0	79.4	83.6	83.0	≥ 82%	82.7
Gem Prep: Meridian	Public, Charter, Alternative	K-12	2750 East Gala Street	Meridian	83823	Latah County	Gem Prep: Meridian LLC	Yes	No	(n/a)	Yes	(208) 917-9150	506	23	22.0	31.1%	380 (75.1%)	8 (1.6%)	80 (15.8%)	11 (2.2%)	3 (0.6%)	4 (0.8%)	20 (4.0%)								(n/a)	80.0	69.8	59.1	71.1	75.6	≥ 58%		69.7	≥ 52%	72.2		63.3	73.3	≥ 53%	65.9	73.3	87.8	75.0		72.8	$8,768	$937	$7,831
Gem Prep: Meridian South	Public, Charter, Alternative	K-11	1925 Lake Hazel Road	Meridian	83823	Latah County	Gem Prep: Meridian South LLC	Yes	(n/a)	(n/a)	(n/a)	(208) 332-6800	458	23	19.9		357 (77.9%)	1 (0.2%)	70 (15.3%)	7 (1.5%)	0 (0.0%)	1 (0.2%)	22 (4.8%)								(n/a)	84.3	68.0	68.1	68.6	71.1	≥ 66%		72.0	60.4	≥ 64%		64.4	72.5	≥ 52%	66.0	80.4	82.2	82.1		73.1
Project Impact Stem Academy	Public, Charter, Alternative	K-12	1422 S Tech Lane	Meridian	83634	Ada County	Project Impact Stem Academy Inc.	Yes	No	(n/a)	Yes	(208) 576-4811	227	16	14.1	39.3%	192 (84.6%)	0 (0.0%)	25 (11.0%)	2 (0.9%)	0 (0.0%)	6 (2.6%)	2 (0.9%)								(n/a)			37.5		37.5			38.4				34.4		50.0	50.0		43.8	50.0		49.3	$9,449	$577	$8,872
Compass Public Charter School	Public, Charter, Alternative	K-12	4667 West Aviator Street	Meridian	83642	Ada County	Compass Public Charter School Inc.	Yes	No	(n/a)	Yes	(208) 888-5847	1,265	68	18.6	12.4%	989 (78.2%)	14 (1.1%)	149 (11.8%)	43 (3.4%)	2 (0.2%)	3 (0.2%)	65 (5.1%)								(n/a)	73.6	81.1	72.5	73.7	71.7	67.8	78.2	73.7	65.7	73.0	80.0	71.6	75.2	78.4	76.1	85.1	83.3	83.5	87.3	80.9	$5,937	$683	$5,254

Frequently Asked Questions about Sage International School Of Boise

Is Sage International School Of Boise a good school?

Sage International School Of Boise ranks 67^th of 350 Idaho alternative schools. SchoolDigger rates this school 4 stars out of 5.

How many students attend Sage International School Of Boise?

In the 2024-25 school year, 1,033 students attended Sage International School Of Boise.

What district is Sage International School Of Boise in?

The Sage International School Of Boise A Public Charter Sch

What is the racial makeup of Sage International School Of Boise?

Students at Sage International School Of Boise are 76% White, 9% Hispanic, 8% Two or more races, 6% Asian.

Rate Sage International School Of Boise!

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Latest Idaho data All new data »

2025–26 attendance dataAug 19, 2026

2025–26 ISAT test scoresAug 19, 2026

2024–25 attendance data & graduation ratesJan 19, 2026

2024–25 ISAT test scoresAug 26, 2025

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.