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
Students
715
Students per teacher
19:1
Free or reduced lunch
23%
Setting
Suburb
Grades
6–8
What stands out about Altona Middle School
- School Grade A: 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
Test scores
EDFacts via Urban Institute Education Data Portal (SY2020-21) · 2020–21Math proficiency46%
State average 30.5%
Reading / language arts67%
State average 47%
Location
Directions ↗
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.
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.
What neighbors say
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Parents talk
Conversations in Town Square that mention Altona Middle School.
Other schools in St. Vrain Valley School District RE 1J
School facts: U.S. Department of Education (NCES), 2024-2025 school year. Scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). The School Grade is our own summary of state test results. Neighbor ratings are opinions, not an official measure of school quality.