English Language Arts
54.6%
State avg 49.6%
District avg 64.3%
County avg 44.4%
-16.8pp since 2022-23
District avg 64.3%
County avg 44.4%
-16.8pp since 2022-23
Test scores
See how it ranks: all South Dakota schools by score · Charles Mix County schools by score
SD Smarter Balanced + SD Science, SY 2023-24
All grades, all students. % Proficient.Mathematics
36.4%
State avg 46.7%
District avg 61.5%
County avg 39.4%
-35.0pp since 2022-23
District avg 61.5%
County avg 39.4%
-35.0pp since 2022-23
Science
N/A
State avg 42.7%
District avg 58.4%
County avg 41.7%
District avg 58.4%
County avg 41.7%
What this means: On the SD Smarter Balanced + SD Science, South Dakota's statewide test, about 55 of every 100 students at this school read and write at grade level and about 36 of 100 do math at grade level. Across all South Dakota schools, those numbers are about 50 and 47. Reading and writing scores are down about 17 points since 2022, while math scores are down about 35 points.
By grade, SY 2023-24
School score vs state average per tested grade.| Grade | English Language Arts | Mathematics | Science | ||||||
|---|---|---|---|---|---|---|---|---|---|
| School | State | n tested | School | State | n tested | School | State | n tested | |
| Grade ALL | 54.6% | 49.6% | 11 | 36.4% | 46.7% | 11 | N/A | 42.7% | N/A |
2-year history
All grades, all students. Platte Colony South Dakota avgEnglish Language Arts
| Year | School | District | County | State |
|---|---|---|---|---|
| SY 2023-24 | 54.6% | 64.3% | 44.4% | 49.6% |
| SY 2022-23 | 71.4% | 63.8% | 47.5% | 49.0% |
Mathematics
| Year | School | District | County | State |
|---|---|---|---|---|
| SY 2023-24 | 36.4% | 61.5% | 39.4% | 46.7% |
| SY 2022-23 | 71.4% | 68.3% | 40.4% | 45.6% |
How to read these scores
What is SD Smarter Balanced + SD Science?
SD Smarter Balanced + SD Science is the statewide standardized test administered by South Dakota public schools.
What does "% Proficient" mean?
It is the share of students at the school who performed at grade level or above on the test, summed across the top two of four performance levels. A higher number is better.
What does 54.6% mean for English Language Arts at Platte Colony Elementary - 10?
It means about 54.6 percent of students tested at Platte Colony Elementary - 10 performed at grade level or above on the SD Smarter Balanced + SD Science English Language Arts test in 2023-24. The statewide average for South Dakota that year was 49.6%. The other students fell into the lower performance levels.
How is the state average calculated?
It is a weighted average, not a simple average of each school's number. We multiply each public school's score by how many of its students tested, add those together for all schools in South Dakota, and divide by the total students tested that year. This way a big school with 1,500 students counts more than a small school with 50 students, which is the right way to ask "how did the typical student do this year?". District and county averages on this page use the same method, just scoped to that district or county.
Where does this data come from?
South Dakota Department of Education, Smarter Balanced (ELA + Math) + SD Science Assessment. School-level All Students subgroup, current-year column from the SD Report Card MicroStrategy export. Headline metric is the cumulative SBAC Level 3+4 / SD Science Proficient+Advanced rate.
How often is it updated?
SD Smarter Balanced + SD Science is administered once a year (spring). Results are released by the state in the summer or early fall. We refresh this page after each annual release.