AI is killing their A+. More than three fourths of teens use AI to do their schoolwork — but it’s causing test scores to plunge as they rely on the tech “to think,” according to a new survey. Meanwhile, Google is pushing to increase the use of its Gemini AI on school-issued Chromebook computers — which have become nearly universal in American classrooms. A total of 70% of teens ages 13 to 17 said they use AI for homework and assignments in class — with 63% admitting they take the shortcut simply “to get answers,” according to a survey by...