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Franklin County

Idaho · Public K-12

Franklin County, Idaho hosts 8 public K-12 schools and around 3,109 students, averaging roughly 389 per campus. Preston Joint District runs the largest share. By level, that breaks down as 3 elementary, 2 middle, and 3 high schools.

7-year change in Franklin County

SY 2017-18 vs SY 2024-25
Total enrollment
3,109
-189 (-6%) vs SY 2017-18
School count
8
-1 (-11%) vs SY 2017-18
% White
87%
was 90%
% Hispanic
10%
was 8%
% Black
0%
was 0%
% Asian
0%
was 0%
Source: NCES Common Core of Data, enrollment-weighted demographic averages
Schools
8
2 districts
Enrollment
3,109
NCES CCD
Median income
$71,950
Above Idaho avg
Free/reduced lunch
44.8%
Below Idaho avg
Elementary
3
1,422 students
Middle
2
717 students
High
3
970 students
Combined / other
0
schools
LARGEST DISTRICT
PRESTON JOINT DISTRICT
2,311 students · 2 districts in Franklin County

County vs. school enrollment demographics

Left bar is the racial makeup of Franklin County residents (Census ACS 5-year). Right bar is the enrollment-weighted makeup of public schools in the county (NCES CCD). NCES systematically under-reports Hispanic, Pacific Islander, and Native American enrollment for many schools; where the resident share is meaningful but the reported school share is zero, we mark the school bar "not reported".

County residents
White
91%
Hispanic
7%
Black
0%
Asian
0%
Two or more
5%
Native American
0%
Pacific Islander
0%
School enrollment
White
87%
Hispanic
10%
Black
0%
Asian
0%
Two or more
1%
Native American
1%
Pacific Islander
0%
Bachelor's+
23.9%
adults 25+
Poverty rate
6.2%
ACS 5-year
Unemployment
2.4%
civilian labor
Median age
33
30.5% under 18

Test scores in Franklin County

Latest 2024-25 ELA proficiency, 6 schools ranked. Idaho state average: 53.7%.

See all 6 schools in Franklin County ranked by score →

All schools (8)

LargestA-ZTop rated
NameCityLevelGradesEnrollmentRating
PRESTON HIGH SCHOOLPrestonHigh09-12679·
PRESTON JR HIGH SCHOOLPrestonMiddle06-08540·
PIONEER ELEMENTARY SCHOOLPrestonElementaryPK-02533·
OAKWOOD ELEMENTARY SCHOOLPrestonElementary03-05516·
HAROLD B LEE ELEMENTARY SCHOOLDaytonElementaryPK-05373·
WEST SIDE SENIOR HIGH SCHOOLDaytonHigh09-12248·
BEUTLER MIDDLE SCHOOLDaytonMiddle06-08177·
FRANKLIN COUNTY HIGH SCHOOLPrestonHigh09-1243·

Cities in Franklin County

Preston5 schoolsDayton3 schools

About Franklin County

Franklin County is a low-population county of about 15,056 residents in Idaho. Its public-school system serves approximately 3,109 students across 8 schools.

Zooming out, census numbers show the median household earns about $71,950 a year, roughly 24% of adults have completed at least a four-year degree, and the poverty rate is around 6%.

For a sense of the school types, Franklin County is built around 3 elementary schools (1,422 students), 2 middle schools (717), and 3 high schools (970).

PRESTON JOINT DISTRICT is the biggest district by enrollment, covering about 2,311 students across Franklin County.

Over the past 7-year window. Total public-school enrollment in Franklin County has decreased 6% since SY 2017-18, moving from about 3,298 students to 3,109. The school count fell from 9 to 8 across the same 7-year window.

Within the allk12 community for this area, the community for Franklin County discusses enrollment trends, district policy changes, and bus-route updates. Posts come from current and former families, staff, and alumni.

Frequently asked questions

How many K-12 schools serve Franklin County?
There are 8 public K-12 schools in Franklin County, Idaho, with a combined enrollment of about 3,109.
How many high schools are in Franklin County?
Franklin County, Idaho has 3 public high schools, serving approximately 970 students.
How many middle schools are in Franklin County?
Franklin County, Idaho has 2 public middle schools, serving approximately 717 students.
How many elementary schools are in Franklin County?
Franklin County, Idaho has 3 public elementary schools, serving approximately 1,422 students.
What is the largest school district in Franklin County?
PRESTON JOINT DISTRICT is the largest school district in Franklin County, serving approximately 2,311 students. The county contains 2 school districts overall.
What is the population of Franklin County?
Franklin County, Idaho has a population of approximately 15,056, with a median age of 33. About 30.5% of residents are under 18.
What is the median household income in Franklin County?
Median household income in Franklin County is $71,950, above the Idaho average of $69,041. About 6.2% of residents live below the federal poverty line.
How educated are residents of Franklin County?
Approximately 23.9% of adults 25 and older in Franklin County hold a bachelor's degree or higher, according to the Census ACS 5-year estimate.
What share of students in Franklin County qualify for free or reduced lunch?
Roughly 44.8% of students in Franklin County public schools qualify for free or reduced-price lunch, a common proxy for low-income enrollment. This is lower than the Idaho county average of 46.6%.
What is the student-teacher ratio in Franklin County schools?
Across Franklin County public schools, the enrollment-weighted student-teacher ratio is approximately 19.8 to 1.

Franklin County school rankings

Largest schoolsAll rankings →
DATA · Census ACS 5-year · NCES Common Core of Data