Timberline High School
Boise, ID · High School · Grades 10-12
Timberline High School is a high school in Boise, ID with 1,398 students enrolled and a 62% proficiency rate. Part of Boise Independent District. NCES data from the U.S. Department of Education.
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About This School
Timberline High School is a high school located in Boise, Idaho. The school serves 1,398 students in grades 10-12. The student-to-teacher ratio is 18.9:1.
According to EDFacts assessment data, 62% of students meet grade-level proficiency standards in combined math and reading. The school reports a 86% graduation rate.
10% of students qualify for free or reduced-price lunch.
Timberline High School is part of the Boise Independent District in Idaho.
How This School Compares
Timberline High School has 1,398 students enrolled, making it larger than the average school in Boise Independent District (447 students). Its 62% proficiency rate is 7 percentage points above the district average of 55%. Compared to the Idaho state average of 54%, the school performs 8 points higher.
Frequently Asked Questions
Timberline High School has 1,398 students enrolled in grades 10-12. The student-to-teacher ratio is 18.9:1.
According to EDFacts data, 62% of students at Timberline High School meet grade-level proficiency standards in combined math and reading assessments.
Timberline High School has a 86% graduation rate, measuring the percentage of students who graduate within four years.
Timberline High School is part of the Boise Independent District in Boise, Idaho. You can view all schools in this district on the district page.
All data on this page comes from the National Center for Education Statistics (NCES) Common Core of Data and EDFacts assessment results. These are official federal datasets published by the U.S. Department of Education.
School profiles are built from NCES directory data and EDFacts assessment results. Proficiency rates reflect combined math and reading performance. Graduation rates are reported for high schools with available data.
For this entity, the underlying data on this page comes from NCES Common Core of Data and EDFacts. The breakdown above is the federal record; the paragraphs below add the per-entity context that makes the headline numbers usable for a real decision rather than just a data lookup.
Every number on this page links back to NCES Common Core of Data and EDFacts; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for this entity’s peers within U.S. public schools and districts. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Source: NCES Common Core of Data, 2026.