Sage International School of Boise

A K-12th grade public school of choice in Boise, Idaho offering the International Baccalaureate curriculum. Graduates of Sage International School will be prepared to become true citizens of the world community, equipped to participate and engage in local and global issues.

Sage International School is a free, public school of choice offering students an International Baccalaureate education. Through our IB curriculum we guide our students to be life long learners engaged in their community and well prepared for college and life success.

Operating as usual

Photos from Sage International School of Boise's post 04/20/2022

And theyโ€™re off! Yesterday was a beautiful day for the first ride of the season for our Sage mountain biking club. Students in 5th-8th of all skill levels were led by coaches Todd Evans and Kim Cross, and volunteers Keith Donahue and several high school riders! Thanks to all our risk takers for coming out, theyโ€™ll ride every Tuesday after school for the next several weeks! Check our website for more details.


Attention future Kindergarten Parents! We will be holding kindergarten screening for the 2022-23 school year on May 20th, please see this important message and sign up for an appointment here:

Photos from Sage International School of Boise's post 04/11/2022

U.S. History & American Government teacher Drew Lunt has spent 4 great days with 9 Sage High Schoolers touring and learning in Washington DC! They visited the Lincoln Memorial, MLK Memorial, Mount Vernon, Jefferson Memorial, the White House, the Capitol and Iwo Jima. Heโ€™s planning another trip for Fall Break 2023 if your high schooler is interested, stay tuned!

Photos from Sage International School of Boise's post 04/06/2022

Sage 7th graders took a long but important educational field trip to the Minidoka National Historic Site in Jerome. They learned why it was built, and about the nearly 120,000 Japanese and Japanese Americans who were forced into 10 isolated war relocation centers like this across the United States during WWII. Students learned the stories of those who spent part of their lives incarcerated there, and the part they play in Idaho and US History.

Mobile uploads 04/05/2022

Parents and teachers of K-5! Follow our NEW PYP (Primary Years Programme) PTO for exciting events coming up!

๐Ÿ“ฃWe are excited to introduce you to the new PYP PTO. Our goal is to be an active part of the Sage community by supporting the grades k-5 students, families, teachers, and staff.

Check out our newsletter linked below to find ways to get involved and stay up to date with upcoming events!

We are a small group and are seeking volunteers. Currently we are working on bringing back popular events and establishing nonprofit status. We would love your participation in any way youโ€™re able to.

We look forward to working with you!

โ€ขCheck out our newsletter:

โ€ขJoin our Facebook group:

โ€ขEmail us at: [email protected]


Sage 2nd grader Juliette raised $212 for Ukrainians by selling lemonade and cookies! ๐Ÿ™Œ๐Ÿผ We are proud of her for being caring and turning her international mindset into ACTION! โค๏ธ๐ŸŒŽ๐Ÿ‡บ๐Ÿ‡ฆ

Photos from Sage International School of Boise's post 04/02/2022

Yesterday afternoon middle school took advantage of a sunny Friday afternoon to get outside and celebrate Earth Day! We love having so many awesome places within walking distance to learn about our beautiful Mother Earth. ๐ŸŒŽ ๐Ÿ’š


iCode Boise has arranged to offer Spring Break camps catered to Sage students ages 6-10! April 11 - 15, 2022 | Monday - Friday | 9 AM - 4 PM (with early drop off and late pickup available.) These will be held at their location at 4940 E. Mill Station Drive, Suite 103 in Boise. iCode Boise camps are perfect for kids who have great imaginations, enjoy solving challenges, or simply love technology. Find the perfect fit for your child's interest and skill level here:

Photos from Sage International School of Boise's post 03/31/2022

WOW! We are incredibly impressed and PROUD of the work nine Sage Seniors had on exhibit tonight at JUMP. The IB Diploma Programme Visual Arts Exhibition is the final phase of examination requirements for the Visual Arts Diploma Certificate. A HUGE shout out to their amazing art teacher Karelia Dubkowski for guiding and inspiring them through this process, it has been a lot of work and we appreciate them sharing their talent with us! ๐ŸŽจ๐Ÿง‘โ€๐ŸŽจ๐Ÿ–ผ

Photos from Sage International School of Boise's post 03/31/2022

What a fun night skating last night with CP/DP! ๐Ÿ›ผ๐ŸŽŠ๐Ÿ•บ๐Ÿ’ƒ๐Ÿผ


Sage International School invites you to the 2022 IB Diploma Programme Visual Arts Exhibition! Come spend an evening celebrating the achievements and hard work of nine senior artists as they share their artistic vision through curated bodies of work. This exhibition is the final phase of the examination requirements for the Visual Arts Diploma Certificate. Students have selected artworks demonstrating both technical and conceptual skills in a variety of media and artforms. The event is open to the public and takes place on Wednesday, March 30th in the JUMP lobby from 5:00 pm- 8:00 pm.

Photos from Sage International School of Boise's post 03/24/2022

Pi Day celebration! Yesterday our winner that recited the most decimals of Pi back on 3/14 (124 to be exact) got to PIE her advisory teacher Ms. Simms AND Mr. Parker in the face while all of middle school looked on! Ms. Johnson even received a bonus pie-ing from some students. A sweet time had by all, and well worth memorizing THIS: 3 . 1 4 1 5 9 2 6 5 3 5 8 9 7 9 3 2 3 8 4 6 2 6 4 3 3 8 3 2 7 9 5 0 2 8 8 4 1 9 7 1 6 9 3 9 9 3 7 5 1 0 5 8 2 0 9 7 4 9 4 4 5 9 2 3 0 7 8 1 6 4 0 6 2 8 6 2 0 8 9 9 8 6 2 8 0 3 4 8 2 5 3 4 2 1 1 7 0 6 7 9 8 2 1 4 8 0 8 6 5 1 3 2 8 2 3 0 6 6 4 7 0 9 3 8 ๐Ÿ˜ณ

Photos from Sage International School of Boise's post 03/24/2022

The Sage High School Olympics have commenced!! Students participate in competitive fun events in teams at the end of each day, we canโ€™t wait to see who medals tomorrow! ๐Ÿ… Stay tunedโ€ฆ


Spring cleaning? The Elementary Art Studio would love to help your family recycle and upscale fun stuff in our classroom. There will be a box inside the front entrance of Everest for the next three weeks, you may drop off or send with your student. We are looking for:

**Old wall calendars with cool images
**NEW toothbrushes (for painting, not brushing teeth!)
**Old costume jewelry/beads
**Small, CLEAN yogurt containers WITH LIDS
**Unwanted cans of spray paint
**Old Books about Art and Artists
**Scrapbooking supplies
**Old plastic stencils and stamps/stamp pads

Thank you!

Photos from Sage International School of Boise's post 03/19/2022

Yesterday Sage 7th graders took a field trip to the Idaho Anne Frank Human Rights Memorial. We feel so grateful for our students to have this opportunity right here in Boise โ€œto think, to talk with one another, and to respond to the human rights issues we face in our community, our country and our world.โ€ Thank you @wassmuthcenter !

Photos from Sage International School of Boise's post 03/16/2022

Last week 2nd graders planned and executed a very lovely and successful Flower Sale! They raised over $500 to be donated to local charities, and made a lot of people happy in the process. Thank you to everyone who supported this awesome project, including @flowerfarmboise for your help, and way to go 2nd Grade! โค๏ธ๐Ÿ’


Applicants spoke to Sage and Forge administrators at BSU's Education Fair today. We love talking about our knowledgeable students, caring staff, and all things IB with our education community!


Boy, this school year has really aged some of our teachers! ๐Ÿคฃ Kindergarten and First Grade went all out for the ๐Ÿ’ฏth day of school yesterday! So much fun.


Each year, the Idaho Business Review launches a Reader Rankings survey to highlight the best of the best across the state. Sage was voted as THE BEST Charter school, which we all already knew, right?! ๐Ÿ˜ Thanks @ibrnews for this great recognition!

Photos from Sage International School of Boise's post 03/04/2022

Today was Forgeโ€™s turn to host our extended family as Sage and Forge came together for Professional Development! It was an awesome day full of collaboration and learning as teachers took part in 3 of the 9 offered sessions. Topics included (as pictured) approaches to teaching, hexagonal thinking for the personal project, and the Career-related Programme. Our breadth and depth of knowledge is even greater as a whole! ๐ŸŒŽ ๐Ÿง‘โ€๐Ÿซ ๐ŸŽ ๐Ÿ“š โœ๏ธ


Thank you to all the families who came out for our second Info Night last night! Lottery Registration closes March 7th and our draw will be March 10th. We are so excited to find out what families get to join our wonderful Sage Family!


It's OFFICIAL! Our partner school in Middleton, Forge International, is an authorized IB World School for PYP! This is a great accomplishment being in just their third year, and not even your "typical" past couple of years. Congratulations Forge Family, we are so proud of you! Forge International School

Forge Fam: WE DID IT! We received the amazing news yesterday that we are APPROVED as an official IB Authorized World School for the PYP. This dream team here of IB/Curriculum Director Dani Zwolfer, Head of School Darci Stelzner, and PYP Coordinator Nora Strauch put in a lot of time and hard work showcasing to the IB Organization all that we do at Forge to be IB! We also owe a huge thank you to our entire Forge community - staff, students, parents, and board - for this huge accomplishment. This candidacy process continues for our MYP, and we are looking forward to equally good news before long. But now we can say OFFICIALLY what weโ€™ve known all along, Forge is IB! ๐ŸŒŽ ๐Ÿ’œ๐Ÿ’š

Photos from Sage International School of Boise's post 03/02/2022

For their unit on weather, our lucky 3rd graders got to Zoom today with the very knowledgeable local celebrity KTVB Larry Gebert! Thank you for your time and sharing your knowledge with us! ๐ŸŒจโ˜€๏ธโ˜”๏ธ๐Ÿ’จ


This Friday! In the Everest Building at Sage, pre-register here:


We are hiring for the K-5 front desk! This is an important position supporting our youngest learners and their teachers and acts as the representative of Sage to our visitors and parents. It's a unique opportunity for a parent who loves kids and would like the same schedule as their Sage student! You can find more info here:

Photos from Sage International School of Boise's post 02/18/2022

Sage won FIRST PLACE! โ›ท๐Ÿ†๐Ÿ‚
This afternoon was the High School Dotty Clark Finals, the event our Snowteam racers have been working toward all season. Our team placed FIRST out of 28 schools in the small schools category!! AMAZING! They scored a whopping 165 points, with the second place team scoring 102. ๐Ÿ˜ณ We are so proud of you, you deserve this! #teamsage Middle School is up next tomorrow! ๐Ÿคž

Photos from Sage International School of Boise's post 02/16/2022

THANK YOU to everyone involved in a really awesome Info Night tonight! We met so many great families, and got to show off our school. Special thanks to our wonderful High School Beta Club members for entertaining some sweet young kids so that their parents could learn more! ๐Ÿ™๐Ÿผ Lottery is March 10th, and the next Info Night is March 3rd!


Tell your friends! Info Night is TONIGHT! 5:30-7:00 at Sage for all families who would like to learn more about Sage. Doors open at 5:00. Can't make it? No worries, we have another one March 3rd. Hope to see you!

Photos from Sage International School of Boise's post 02/15/2022

This past Friday, some of our Forge and Sage students were able to eat lunch together up at Bogus Basin. Both schools are participating in the Life Sports program that is offered by Bogus Basin. We are so excited they got to meet and connect, we look forward to more Fridays together like this!


We couldnโ€™t let this week pass by without a HUGE thank you to two wonderful humans who make our campus better every day! โ˜€๏ธ Our school counselors Ashley (K-7th) and Brittany (8-12th) help our students thrive socially, emotionally, mentally, and academically. THANK YOU for all you do!

Photos from Sage International School of Boise's post 02/11/2022

Whooooo says itโ€™s time to enroll? This wise owl of course! ๐Ÿ˜ฑ๐Ÿฆ‰๐Ÿ‡บ๐Ÿ‡ธ Sage families you have until Feb 18th to secure your spot for next year (check your email), and NEW families our lottery is March 10th!
Photo credit: our wonderful CFO Emily Downey after working late today (she usually does)! โค๏ธ๐Ÿ“ธ

Photos from Sage International School of Boise's post 02/07/2022

Sage Snowcoming 2022 was an absolute BLAST! Itโ€™s been far too long since our high school kids have had fun together like THIS, thank you for coming and dancing with us! ๐Ÿ’ƒ๐Ÿผ๐Ÿ•บ๐Ÿค˜๐Ÿฝ๐ŸŽถ

Home 02/07/2022


The Sage 2022-23 Enrollment Lottery is OPEN! We invite you to find out more about our IB World School here:
We will be holding two Information Sessions for families to visit our school and learn more. Click the link above for details, we hope to see you!


Our Story

Sage International School is a free, K-12 public school of choice offering students an International Baccalaureate education. We are one of only two K-12 public schools in the US authorized as IB World Schools in all four IB curriculum programs: IB Primary Years (K-5th), IB Middle Years (6th-10th), IB Diploma Program (11th and 12th) and IB Career Program (11th and 12th). Our Mission is to โ€œEngage students within an inclusive IB learning community, challenging all members to take risks and contribute locally and globally through open-minded inquiry.โ€

Videos (show all)



K-12 education, International Baccalaureate program, French language instruction, rigorous academic program, central Boise location.



431 E Parkcenter Blvd
Boise, ID

Other Middle Schools in Boise (show all)
Capital High School Marching Band Capital High School Marching Band
8055 W Goddard Rd
Boise, 83704

iSucceed Virtual Schools iSucceed Virtual Schools
6148 N Discovery Way, Ste 120
Boise, 83713

iSucceed Virtual School is a tuition-free, fully-accredited, public, charter school that offers grades 8-12th to students around the state of Idaho.

Capital High DECA Capital High DECA
Boise, 83704

DECA is an Association of Marketing Students.

Just For Kids - Boise Public Schools Just For Kids - Boise Public Schools
8169 W Victory Rd
Boise, 83709

Just for Kids is on-site childcare provided by the Boise School District for K-6 students at 13 elementary school sites.

East Junior High School East Junior High School
5600 E Warm Springs Ave
Boise, 83716

The Best of Boise.

The Booth Program for Young Parents The Booth Program for Young Parents
9492 W Emerald St
Boise, 83704

The Salvation Army's Booth Program for Young Parents has been serving young women and their babies since 1921.

The Booth Program for Young Parents The Booth Program for Young Parents
9492 W Emerald St
Boise, 83704

The Salvation Army's Booth Program for Young Parents has been serving young women and their babies since 1921.

Join us live for all the Varsity Bishop Kelly girls and boys basketball games.

Cardinal Academy Cardinal Academy
9492 W. Emerald St
Boise, 83704

Cardinal Academy is a new charter school for pregnant and parenting teens, opening Fall of 2021 in Boise, Idaho. Now registering students at: Amazon Wishlist:

Cynthia Mann Elementary PTO Cynthia Mann Elementary PTO
5401 W Castle Dr
Boise, 83703-3205

Centennial High Patriots Centennial High Patriots
12400 W McMillan Rd
Boise, 83713

Centennial High School Patriots West Ada School District 12400 W. McMillan Road, Boise, ID 83713