Rigrodsky & Long, P.A. Announces Investigation of Archipelago Learning, Inc. Takeover

WILMINGTON, Del.--(BUSINESS WIRE)--Rigrodsky & Long, P.A. announces that it is investigating potential claims against the board of directors of Archipelago Learning, Inc. (“Archipelago” or the “Company”) (NASDAQ GS: ARCL) concerning possible breaches of fiduciary duty and other violations of law related to the Company’s entry into an agreement to be acquired by PLATO Learning, Inc. (“Plato Learning”) in an all-cash deal valued at about $291 million. Click here to learn more and to discuss your shareholder rights: http://www.rigrodskylong.com/investigations/archipelago-learning-inc-arcl