Judy Woodruff:
Cigarette smoking among youth is at historic lows, but the number of kids using electronic cigarettes has increased.
The government estimates the number is two million. Although e-cigarettes deliver nicotine, many teens mistakenly believe there are no serious health risks.
And since newer devices look like computer thumb drives, it's harder for educators to detect them.
That's led to worries about e-cigarettes in schools, including the most popular one, Juul.
Special correspondent Kavitha Cardoza, with our partner Education Week, visited a school in Milford, Connecticut, where the principal is trying to change the behavior.
It's part of our weekly series Making the Grade.
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