The Pandemic’s Impact on Girls in STEM
IRVING — Crowded around a workshop table, four girls at de Zavala Middle School puzzled over a Lego machine they had built. As they flashed a purple card in front of a light sensor, nothing happened.
The teacher at the Dallas-area school had emphasized that in the building process, there is no such thing as mistakes. Only iterations. So the girls dug back into the box of blocks and pulled out an orange card. They held it over the sensor and the machine kicked into motion.
“Oh! Oh, it reacts differently to different colors,” said sixth grader Sofia Cruz.
In de Zavala’s first year as a choice school focused on science, technology, engineering and math, the school recruited a sixth grade class that’s half girls. School leaders are hoping the girls will stick with STEM fields. In de Zavala’s higher grades — whose students joined before it was a STEM school — some elective STEM classes have just one girl enrolled.
Efforts to close the gap between boys and girls in STEM classes are picking up after losing steam nationwide during the chaos of the COVID-19 pandemic. Schools have extensive work ahead to make up for the ground girls lost, in both interest and performance.
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The Pandemic’s Impact on Girls’ Math Scores
In the years leading up to the pandemic, the gender gap nearly closed. But within a few years, girls lost all the ground they had gained in math test scores over the previous decade, according to an Associated Press analysis. While boys’ scores also suffered during COVID, they have recovered faster than girls, widening the gender gap.
As learning went online, special programs to engage girls lapsed — and schools were slow to restart them. Zoom school also emphasized rote learning, a technique based on repetition that some experts believe may favor boys, instead of teaching students to solve problems in different ways, which may benefit girls.
Old practices and biases likely reemerged during the pandemic, said Michelle Stie, a vice president at the National Math and Science Initiative.
“Let’s just call it what it is,” Stie said. “When society is disrupted, you fall back into bad patterns.”
Leah Martinez (left) and Sofia Cruz work on a project during a Lego-focused science lesson at de Zavala Middle School on Thursday, Aug. 21, 2025, in Irving.
Ronaldo Bolaños / AP
The Gender Gap in Math Scores
In most school districts in the 2008-09 school year, boys had higher average math scores on standardized tests than girls, according to AP’s analysis, which looked at scores across 15 years in over 5,000 school districts. It was based on average test scores for third through eighth graders in 33 states, compiled by the Educational Opportunity Project at Stanford University.
During the Lego lesson, the de Zavala girls learned about kinetic energy.
Ronaldo Bolaños / AP
A decade later, girls had not only caught up, they were ahead: Slightly more than half of districts had higher math averages for girls.
Within a few years of the pandemic, the parity disappeared. In 2023-24, boys on average outscored girls in math in nearly nine out of 10 districts.
A separate study by NWEA, an education research company, found gaps between boys and girls in science and math on national assessments went from being practically nonexistent in 2019 to favoring boys around
