11500 E Cochise Drive Unit 1090, Scottsdale
(602) 483-4665
DeLex Realty
Mountainside Middle School is a Scottsdale Unified School District school for grades 6 through 8 at 11256 N. 128th Street in Scottsdale, ZIP 85259. It is an International Baccalaureate World School that teaches the IB Middle Years Programme to every student, and it sits close to Desert Mountain High School, where the program continues.
I'm Terry Day with DeLex Realty. Buyers looking in east Scottsdale often ask me about Mountainside, so I put together what the school and the district publish, plus how to check which school a home is actually assigned to before you write an offer.
See homes for sale near Mountainside Call Terry: 602-483-4665
The campus is on N. 128th Street in east Scottsdale, in the 85259 ZIP code. The school describes itself as being in close proximity to Desert Mountain High School, and its homepage names the Desert Mountain Learning Community, the district's grouping of schools in this part of Scottsdale. The front office is open 7:00 a.m. to 3:30 p.m. on school days.
Mountainside opened in 1991 and uses the tagline "Inspire. Learn. Lead." The biggest thing to know is that it is an IB World School. Every student in grades 6 to 8 takes part in the IB Middle Years Programme, which covers years 1 to 3 of the program. Years 4 and 5 continue at Desert Mountain High School, so students who stay on that path can keep the same framework into high school.
The MYP subject areas listed on the school site are:
The arts page lists band, choir, orchestra and strings, theatre and visual art as offerings. Clubs posted by the school include Drama Club, National Junior Honor Society, Science Olympiad, a before-school Jazz Band from November to April, and an after-school Robotics club. Sports listed include volleyball, baseball, basketball, soccer, softball, flag football, cross country, track and field, and spiritline. The school site also links to the district's before and after school care program and a summer camp; ask the district for current details on both.
SUSD assigns students to schools by home address, so the first step for any house is the district's middle school locator. Please confirm boundaries with the district. A home near Mountainside is not guaranteed to be assigned to it.
This matters more than usual right now. SUSD's Phase II school repurposing page says the approved plan closes Copper Ridge and Laguna Prep after the 2026-27 school year, and some of the boundary options it describes would assign additional neighborhoods to Mountainside for grades 6 to 8. The district says it will share specific school assignments after the Governing Board's decision, so check the locator and the district again before you buy.
For 2027-28, the school says regular and open enrollment begin November 2, 2026 at 8 a.m. Regular enrollment is for students in the school's boundary and asks for proof of residency, a birth certificate, current immunization records and online registration forms. Open enrollment is for students outside SUSD boundaries or in-district students who want a different school, and acceptance depends on grade-level and program capacity and meeting admission requirements. The school also offers optional campus tours.
East Scottsdale has a mix of master-planned neighborhoods, golf communities and custom-home areas. These guides cover some of the closest options; check each home's school assignment with the locator.
The button below opens the current homes for sale tied to this school area. I can also set up a search around the exact boundary once you have narrowed down a few streets.
See homes for sale near Mountainside Call Terry: 602-483-4665
What grades does Mountainside Middle School serve?
Mountainside serves grades 6 through 8 in the Scottsdale Unified School District. Students then go on to high school, and the IB program continues at Desert Mountain High School.
Is Mountainside an IB school?
Yes, the school calls itself an International Baccalaureate World School, and every student takes the IB Middle Years Programme. The school lists French, Mandarin and Spanish for language study.
What are the school hours?
The regular day runs 8:15 a.m. to 2:50 p.m., and early release days end at 12:50 p.m. Check the school's bell schedule page for assembly days and the current calendar.
How do I know if a home is zoned for Mountainside?
Enter the address in SUSD's middle school locator and confirm with the district, because boundaries in this area may change after the Phase II decisions. I check this on every home my buyers consider.
More school-area pages: Desert Mountain High School | Chaparral High School | Copper Ridge School | Homes by school | All Scottsdale listings
School details come from Mountainside Middle School and Scottsdale Unified School District websites and can change. Always confirm school assignments and enrollment rules with the district for a specific address.
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