Nearly all teachers -- 95 percent -- are using technology in the classroom nowadays. Elementary and middle school grades dominate when it comes to tech usage. What are the most popular tools? Video streaming beats out all others, according to a report released by Common Sense Education. Some 60 percent of teachers use video steaming services, such as YouTube, in the classroom. That’s followed by productivity and presentation tools like Microsoft Office and Google G Suite for Education at 54 percent.