Maryland school officials are developing curriculum standards for history classes to include lessons about the fight for civil rights for the LGBT community and Americans with disabilities. If the changes are approved, Maryland would join at least four other states that have taken steps to require public schools to teach lesbian, gay, bisexual and transgender history, which advocates say has long been absent from textbooks and classroom lessons. Last month, dozens of state lawmakers signed a letter calling on Maryland school officials to craft new curriculum standards addressing the rights of LGBT and disabled communities. The letter specifically mentioned the...