Giving Compass' Take:

• Global Citizen explains that one in three schools around the world are without proper sanitation and toilets, putting about 620 million students at risk.

• How can philanthropists engage with this issue and help expand access to WASH? How would such an effort intersect with the Sustainable Development Goals?

• Here's how one company is heeding the call to make pit toilets history by 2030.

A lack of proper school toilets threatens the health, education, and safety of at least 620 million children around the world, the charity WaterAid said in a new study published on Friday.

Children at 1 in 3 schools lack access to proper toilets, putting them at risk of diarrhea and other infections and forcing some to miss lessons altogether, according to the study, based on data from 101 countries.

Guinea-Bissau in West Africa has the worst school toilets while Ethiopian children fare worst at home, with 93% of homes lacking a decent toilet according to the report, released ahead of World Toilet Day on Monday.

"The message here is that water and sanitation affect everything," WaterAid spokeswoman Anna France-Williams told the Thomson Reuters Foundation.

"If there's no toilet in schools, children will miss lessons and it will have an impact on their growing up."

A lack of proper sanitation puts millions of children around the world in danger of diarrhea, which kills 289,000 under-fives a year, WaterAid said.

Read the full article about the lack of clean school toilets by Naimul Karim at Global Citizen.