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A

Altona Middle School

PublicMiddleGrades 6–8

4600 Clover Basin Drive, Longmont, CO 80503 · (720) 494-3980 · Part of St. Vrain Valley School District RE 1J

Longmont’s School Grade A− better than 82% of Colorado school districts

Students
715
Students per teacher
19:1
Free or reduced lunch
23%
Setting
Suburb
Grades
6–8
The gist

What stands out about Altona Middle School

  • Its own letter, A: reading and math results near the top of Colorado’s public schools
  • Math proficiency 16 pts above the state
  • Reading / language arts 20 pts above the state
  • Enrollment down 9.9% since 2020–21
  • Next stop for Longmont kids: 3 high schools

On the path

Where Longmont kids come from and go next. The whole path →

PK–514 elementary schoolsDepends on your address
6–8Altona Middle SchoolYou are here
9–123 high schoolsDepends on your address

Test scores

2020–21
Math proficiency46%
State average 30.5%
Reading / language arts67%
State average 47%

Its own letter, A, places these results among Colorado’s 1,665 public schools with results. Source: EDFacts via Urban Institute Education Data Portal (SY2020-21).

4600 Clover Basin Drive, Longmont

Students

Enrollment by grade
Grade 6235
Grade 7241
Grade 8239
Enrollment over time
794’20
795’21
770’22
741’23
715’24

Down 9.9% since 2020–21.

Who goes here
White 69%Hispanic 15%Asian 10%Two or more races 5%Black <1%

As reported to NCES, share of students with a reported race or ethnicity.

Parents talk

Questions and answers about Altona Middle School from Longmont families.

Other schools in St. Vrain Valley School District RE 1J

The district →

School facts: U.S. Department of Education (NCES), 2024–2025 school year. Test scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). A school’s letter is our own summary of its reading and math results against Colorado’s other public schools; Longmont’s School Grade is built from its districts’ results. Map: © OpenStreetMap contributors.