More than half of Memphis schools received the lowest possible score for student growth on Tennessee’s new test last school year, according to data obtained by Chalkbeat for Shelby County Schools.

On a scale of 1 to 5, with 1 being the lowest measure, about 54 percent of the district’s 187 schools scored in the bottom rung of the Tennessee Value-Added Assessment System, known as TVAAS.

That includes most schools in the Innovation Zone, a reversal after years of showing high growth in the district’s prized turnaround program.

Charter schools fared poorly as well, as did schools that were deemed among the state’s fastest-improving in 2015.

Superintendent Dorsey Hopson called the scores a “huge wakeup call.”

“It shows that we’ve got a tremendous amount of work to do,” Hopson told Chalkbeat on Monday. “It’s going to be hard and it’s going to be frustrating. … It starts with making sure we’re supporting teachers around mastering the new standards.”

District leaders across Tennessee have been trying to wrap their heads around the latest growth scores since receiving the data in late August from the State Department of Education. Only two years earlier, the Memphis district garnered the highest possible overall growth score. But since then, the state has switched to a harder test called TNReady that is aligned for the first time to more rigorous academic standards.

TVAAS results are scheduled to be released publicly this week, but Chalkbeat obtained a copy being circulated within Shelby County Schools, Tennessee’s largest district.

The data is prompting questions from some Memphis educators — and assurances from state officials — over the validity of TVAAS, the state’s system for measuring learning and judging the effectiveness of its teachers and schools.

This is the first year of issuing district-wide TVAAS scores since 2015. That’s because of the state’s cancellation of 2016 testing for grades 3-8 due mostly to failures in the switch to online testing.

Some educators wonder whether the bumpy switch to TNReady is a factor in this year’s nosedive, along with changes in how the scores are calculated.

For example, data for fourth-graders is missing since there is no prior state testing in third grade for comparison. Elementary and middle schools also don’t have growth scores for social studies, since the 2017 questions were a trial run and the results don’t count toward a school’s score.

Hopson acknowledged concerns over how the state compares results from “two very different tests which clearly are apples and oranges,” but he added that the district won’t use that as an excuse.

“Notwithstanding those questions, it’s the system upon which we’re evaluated on and judged,” he said.

State officials stand by TVAAS. They say drops in proficiency rates resulting from a harder test have no impact on the ability of teachers, schools and districts to earn strong TVAAS scores, since all students are experiencing the same change.

“Because TVAAS always looks at relative growth from year to year, not absolute test scores, it can be stable through transitions,” said Sara Gast, a spokeswoman for the State Department of Education.

Shelby County Schools is not the only district with disappointing TVAAS results. In Chattanooga, Hamilton County Schools logged low growth scores. But Gast said that more districts earned average or high growth scores of 3, 4 or 5 last school year than happened in 2015.

Want to help us understand this issue? Send your observations to tn.tips@chalkbeat.org

Below is a breakdown of Shelby County’s TVAAS scores. A link to a school-by-school list of scores is at the bottom of this story.

Districtwide

School-wide scores are a combination of growth in each tested subject: literacy, math, science and social studies.

Fifty three schools saw high growth in literacy, an area where Shelby County Schools has doubled down, especially in early grades. And 51 schools saw high growth in math.

Note: A TVAAS score of 3 represents average growth for a student in one school year. A score of 1 represents significantly lower academic growth compared to peers across the state.

2017

School-wide composite Number of schools Percent of schools
1 101 54%
2 19 10%
3 20 11%
4 10 5%
5 37 20%

2015

School-wide composite Number of schools Percent of schools
1 58 28%
2 16 8%
3 38 19%
4 18 9%
5 75 37%

Innovation Zone

Out of the 23 schools in the district’s program to turn around low-performing schools, most received a growth score of 1 in 2017. That stands in stark contrast to prior years since the program opened in 2012, when most schools were on a fast growth track.

School-wide composite Number of iZone schools
1 14
2 2
3 2
4 0
5 5

Reward schools

Nearly half of 32 schools deemed 2015 Tennessee reward schools for high growth saw a major drop in TVAAS scores in 2017:

  • Central High
  • Cherokee Elementary
  • Germanshire Elementary
  • KIPP Memphis Middle Academy
  • Kirby High
  • Memphis Business Academy Elementary
  • Power Center Academy High
  • Power Center Academy Middle
  • Ross Elementary
  • Sheffield High
  • South Park Elementary
  • Southwind High
  • Treadwell Middle
  • Westside Elementary

Charter schools

Charter schools authorized by Shelby County Schools fared similarly to district-run schools in growth scores, with nearly half receiving a TVAAS of 1 compared to 26 percent of charter schools receiving the same score in 2015.

2017

School-wide composite Number of iZone schools
1 18
2 6
3 7
4 2
5 7

2015

School-wide composite Number of iZone schools
1 10
2 2
3 7
4 3
5 16

Optional schools

Half of the the district’s optional schools, which are special studies schools that require students to test into its programs, received a 1 on TVAAS. That’s compared to just 19 percent in 2015.

2017

School-wide composite Number of iZone schools
1 23
2 6
3 5
4 2
5 10

2015

School-wide composite Number of iZone schools
2 5
3 6
4 5
5 14

You can sort through a full list of TVAAS scores for Shelby County Schools here.