NEW YORK, April 10 /PRNewswire-FirstCall/ -- The McGraw-Hill Companies (NYSE: MHP) announced today that its first quarter 2007 results will be released before the start of NYSE trading on Tuesday, April 24, 2007.

At 8:30 AM Eastern Time, following the earnings announcement, the Corporation's senior management will host a conference call to discuss the results. The call will be open to all interested parties and will also be available by Webcast. Discussions may include forward-looking information. Additional information presented during the conference call may be made available on the Investor Presentations page of the Corporation's Investor Relations Website at http://www.mcgraw-hill.com/investor_relations.

After the conference call, a recorded replay will be available within approximately two hours and will remain available by telephone and the Internet for seven days. The prepared remarks and slides will also be available for downloading from the Investor Relations Website's Investor Presentations archive several hours later.

    Access Instructions for Live Call with Senior Management
    April 24, 2007 at 8:30 AM (Eastern Time)

    Step 1: Select your listening option

      A. By Telephone: Please dial-in by 8:20 AM Eastern Time to register for
         the call. Domestic participants may call (888) 323-5423;
         international participants may call +1 (415) 228-5016 (long distance
         charges will apply).  The passcode is McGraw-Hill and the conference
         leader is Harold McGraw III.

      B. By Internet: Go to http://www.mcgraw-hill.com/investor_relations and
         click on the Earnings Announcement link under Investor Presentation
         Webcasts. At the Event Details screen, select the Webcast link and
         register through the guest book. You will need Windows Media Player.

    Step 2 (optional): View slides online during the call

         Go to https://www.mymeetings.com/nc/join. The conference meeting
         number is PG6816259, the passcode is MCGRAW HILL (case sensitive),
         and the event type is "Conference."  Click on the "Proceed" button.
         You will need Windows Media Player. For technical assistance during
         the call, press * 0.

         NOTE: Please perform a system check to ensure your computer is
         properly configured to participate in a Net Conference. Go to
         http://www.mymeetings.com/netconferencing/lm2005/index.php and click
         on "Check Your System Now."

    Replay Options Available from April 24 - May 1, 2007

      A. By Telephone-Audio Only: A recorded replay will be available
         approximately two hours after the meeting concludes and will remain
         available until 11:30 PM (Eastern Time) on Tuesday, May 1, 2007.
         Domestic participants may call (800) 685-1235; international
         participants may call +1 (203) 369-3419 (long distance charges will
         apply). No passcode is required.

      B. By Internet-Audio and Slides: Go to
         http://www.mcgraw-hill.com/investor_relations and click on the
         Earnings Announcement link under Investor Presentation Webcasts. At
         the Event Details screen, select the Webcast Replay link. You will
         need Windows Media Player.

About The McGraw-Hill Companies:

Founded in 1888, The McGraw-Hill Companies is a leading global information services provider meeting worldwide needs in the financial services, education and business information markets through leading brands such as Standard & Poor's, McGraw-Hill Education, BusinessWeek and J.D. Power and Associates. The Corporation has more than 280 offices in 40 countries. Sales in 2006 were $6.3 billion. Additional information is available at http://www.mcgraw-hill.com.

Release issued: April 10, 2007

SOURCE The McGraw-Hill Companies

Contact: Investor Relations: Donald S. Rubin Senior Vice President, Investor Relations (212) 512-4321 (office) donald_rubin@mcgraw-hill.com For questions regarding call access: Celeste M. Hughes Senior Manager, Communications and Shareholder Relations (212) 512-2192 (office) celeste_hughes@mcgraw-hill.com News Media: Steven H. Weiss Vice President, Corporate Communications (212) 512-2247 (office) (917) 699-9389 (mobile) weissh@mcgraw-hill.com Jason Feuchtwanger Senior Manager, Media Relations (212) 512-3151 (office) (347) 419-4169 (mobile) jason_feuchtwanger@mcgraw-hill.com