EXHIBIT 23.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM PHC, Inc. Peabody, MA We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (No.'s, 333-2246, 333-41494, 333-76137 and 333-117146) and Form S-8 (No. 333-102402) of PHC, Inc. of our report dated August 23, 2005, relating to the consolidated financial statements, which appears in the Annual Report to Shareholders, which is incorporated in this Annual Report on Form 10-K. /s/ BDO Seidman, LLP Boston, MA September 23, 2005 -- 82 --