VOA教育报道2024--Extreme Heat Closes Schools, Widens Learning Gap

Hena Khan is a ninth-grade student in Dhaka, Bangladesh. She struggled to keep attention on her studies last week as temperatures rose above 43 degrees Celsius¹ in Bangladesh's capital.

"There is no real education in schools in this punishing heat," she said. "Teachers can't teach, students can't concentrate. Rather, our lives are at risk."

Khan is one of more than 40 million students who have been shut out of classrooms in recent weeks. Heatwaves have forced school closures in parts of Asia and North Africa. As the climate warms due to the burning of fossil fuels, heatwaves are lasting² longer and reaching higher temperatures.

Government officials and public health experts across the world are increasingly struggling with whether to keep students learning in hot classrooms.

Either decision has impacts. About 17 percent of the world's school-aged children are already out of school, says the United Nations. But the proportion is much larger in developing countries.

Test scores in the developing world also behind developed countries.

Heat could worsen inequalities by widening learning gaps between wealthy countries and poor nations in the tropics, experts told Reuters. It could even worsen inequalities between rich and poor areas in wealthy countries. Sending children to hot schools can also make them sick.

Earlier this spring, heat-related school closures in South Sudan affected³ over 2 million students. Temperatures rose to 45 degrees Celsius there in late March. Thousands of schools in the Philippines and in India closed schools in late April, impacting more than 10 million students.

Last week, Cambodia ordered all public schools to cut two hours off the school day to avoid the peak heat at midday.

Bangladesh has debated whether to close schools for about 33 million students. Temperatures there are rising to dangerous levels.

Many Bangladeshi schools "don't have fans, the ventilation is not good, and they... (do) not provide good insulation⁴," said Shumon Sengupta. He is Bangladesh country director for the nonprofit organization Save the Children.

Even if students continue attending classes during heatwaves, their education is likely to suffer. High temperatures slow down the brain's functions, lowering students' ability to remember and process information.

A 2020 study found that American high schoolers performed worse on standardized⁵ tests if they were exposed to higher temperatures in the year leading up to the exam.

The research was published in the American Economic Journal. It found that a .55 Celsius degree warmer school year reduced that year's learning by 1 percent. Schools with air conditioning did not feel those same effects, said study co-writer Josh Goodman. He is an economist⁶ at Boston University.

Goodman and his research partners found similar learning results tied to heat when they looked at standardized test data in other countries. "When (students in) these places experience a year with more heat, they appear to have learned less," he said.

Other research suggests high heat in the tropics can also impact a child's education even before birth.

Children in Southeast Asia exposed to higher-than-average temperatures in utero and early in life received fewer years of schooling⁷ later in life. That information comes from a 2019 study in the Proceedings⁸ of the National Academy of Sciences.

Goodman said as the world warms, already hot countries that become extremely hot countries will suffer more than cooler countries. "Climate change will widen the learning gaps between hot and cool countries," Goodman said.

Some developed countries are trying to find solutions to the issue.

In March, the U.S. Agency for International Development (USAID) announced it would build 30 heat-resilient schools in Jordan by 2026, a USAID spokesperson said. Heat-resilient buildings can remain comparatively cool in very hot weather.

USAID said it would spend $8.17 million on the schools. The schools would have special cooling systems and air conditioning.

The number of days that schools are closed for extreme heat has been increasing in the United States. Few countries record such data.

In Bangladesh last year, schools were closed for 6 to 7 days, said Save the Children's Sengupta. "But this year, they are saying it might be closed for 3 to 4 weeks," he said.

Words in This Story

punish - v. to make suffer for a crime or for bad behavior

concentrate - v. to think about something

impact - v. the act or force of one thing hitting another

proportion - n. an amount that is a part of a whole

gap - n. a space between two people or things

ventilate - v. to allow fresh air to enter and move through

insulation - n. a material or substance that is used to stop heat, electricity, or sound from going into or out of something

expose - v. to leave without covering or protection

in-utero - n. before birth

resilient - adj. able to become strong, healthy, or successful again after something bad happens

1 Celsius   

adj.摄氏温度计的，摄氏的

参考例句：

• The temperature tonight will fall to seven degrees Celsius.今晚气温将下降到七摄氏度。
• The maximum temperature in July may be 36 degrees Celsius.七月份最高温度可能达到36摄氏度。

2 lasting   

adj.永久的，永恒的；vbl.持续，维持

参考例句：

• The lasting war debased the value of the dollar.持久的战争使美元贬值。
• We hope for a lasting settlement of all these troubles.我们希望这些纠纷能获得永久的解决。

3 affected   

adj.不自然的，假装的

参考例句：

• She showed an affected interest in our subject.她假装对我们的课题感到兴趣。
• His manners are affected.他的态度不自然。

4 insulation   

n.隔离；绝缘；隔热

参考例句：

• Please examine the insulation of the electric wires in my house.请检查一下我屋子里电线的绝缘情况。
• It is always difficult to assure good insulation between the electric leads.要保证两个电触头之间有良好的绝缘总是很困难的。

5 standardized   

adj.标准化的

参考例句：

• We use standardized tests to measure scholastic achievement. 我们用标准化考试来衡量学生的学业成绩。
• The parts of an automobile are standardized. 汽车零件是标准化了的。

6 economist   

n.经济学家，经济专家，节俭的人

参考例句：

• He cast a professional economist's eyes on the problem.他以经济学行家的眼光审视这个问题。
• He's an economist who thinks he knows all the answers.他是个经济学家，自以为什么都懂。

7 schooling   

n.教育；正规学校教育

参考例句：

• A child's access to schooling varies greatly from area to area.孩子获得学校教育的机会因地区不同而大相径庭。
• Backward children need a special kind of schooling.天赋差的孩子需要特殊的教育。

8 proceedings   

n.进程，过程，议程；诉讼(程序)；公报

参考例句：

• He was released on bail pending committal proceedings. 他交保获释正在候审。
• to initiate legal proceedings against sb 对某人提起诉讼