More administrators say they are leading by example by encouraging educators to use more digital technology in the classroom. They say this type of leadership will become increasingly important as districts work to implement the Common Core State Standards. "Modeling is crucial. If you want your kids and teachers to be users of 21st-century tools, ... you have to show that you can do it too," said Spike Cook, principal of an elementary school in Millville, N.J. "It shows that I'm still a teacher -- I can still instruct and still learn."