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
- Next stop for Altona kids: 8 high schools
On the path
Where Altona kids come from and go next.
PK–828 schoolsDepends on your address
6–8Altona Middle SchoolYou are here
128 high schoolsDepends on your address
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.