Blackboard (BBBB.O), an online learning-software company, said it bought privately held Presidium Inc for $53 million in cash to boost its student services, and forecast first-quarter adjusted earnings below analysts' estimates. Blackboard, which sees Reston, Virginia-based education services company Presidium adding $27 million to its 2011 adjusted sales, said it expects the acquisition to hurt 2011 adjusted earnings by 10 cents. "In 2011, we will be making additional investments in support of their technology and operations, and we expect to re-accelerate growth rates in 2012," Blackboard Chief Executive Michael Chasen said in a statement.
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