Multiracial students are being tallied for the first time in Texas history, but their standardized test scores won't appear as a separate group when accountability ratings are released Friday. As it grapples with increasing diversity, Texas has opted not to measure the scores of the state's 78,419 multiracial, non-Hispanic students as an ethnic subgroup whose performance matters in determining whether a school made "adequate yearly progress." Instead, they'll join the ranks of the 180,000 Asian students lumped in with their schools' entire student body for accountability purposes. Texas continues to only hold three racial subgroups accountable: whites, blacks and Hispanics....