The era of coloring in ovals with a No. 2 pencil may soon be over, the Las Vegas Sun reports. More and more tests — such as the military aptitude test and the LSAT law school exam — are going online. And soon, the standardized math and reading tests for 19 million students in 25 states, including Nevada, will be administered on a tablet or personal computer. This new computerized assessment will represent one of the largest technological shifts in K-12 education, one that will likely herald the end of the Scantron. But with any technological disruption, there are questions aplenty…