WASHINGTON — Last summer, with public concern about teenage vaping growing, Juul Labs paid a charter school organization in Baltimore $134,000 to set up a five-week summer camp to teach children healthy lifestyles.

The curriculum was created by Juul — maker of the very vaping devices that were causing the most alarm among parents, health experts and public officials.

In April 2017, a Juul representative visited the Dwight School in New York City to meet with students — with no teachers present — and told them the company’s e-cigarettes were “totally safe.”

Other schools across the country were offered $10,000 from the e-cigarette company for the right to talk to students in classrooms or after school.