NEW YORK, April 14 /PRNewswire-FirstCall/ -- The McGraw-Hill Companies (NYSE: MHP) announced today that its first quarter 2008 results will be issued via news release before the start of NYSE trading on Tuesday, April 29, 2008 and will be available for downloading from www.mcgraw-hill.com. The Corporation's senior management will host a conference call that morning at 8:30 AM Eastern Time (12:30 GMT). Participating in the call will be:

-- Harold McGraw III, Chairman, President and Chief Executive Officer

-- Robert J. Bahash, Executive Vice President and Chief Financial Officer

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.

A recorded replay will be available beginning two hours after the call. 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 29, 2008 at 8:30 AM Eastern Time (12:30 GMT)

Step 1: Select your listening option

A. By Telephone: Please dial-in to the call 10 minutes before the start time. 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://investor.mcgraw- hill.com/phoenix.zhtml?c=96562&p=irol-EventDetails&EventId=1820171. (Please copy and paste URL into web browser.)

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

Go to https://www.mymeetings.com/nc/join. The conference meeting number is PG4193132, the passcode is MCGRAW HILL (case sensitive), and the event type is "Conference." Click on the "Proceed" button. For technical assistance during the call, press *0. To ensure your computer is properly configured, go to http://www.mymeetings.com/netconferencing/lm2005/index.php and click on "Check Your System Now."

Replay Options: Telephone and Internet

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 May 29, 2008 (3:30 GMT on May 30, 2008). Domestic participants may call (888) 662-6641; international participants may call +1 (402) 220-6412 (long distance charges will apply). No passcode is required.

B. By Internet-Audio and Slides: The archived webcast will be available at http://investor.mcgraw-hill.com/phoenix.zhtml?c=96562&p=irol- EventDetails&EventId=1820171. (Please copy and paste URL into web browser.)

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 2007 were $6.8 billion. Additional information is available at www.mcgraw-hill.com.

Homepage: http://www.mcgraw-hill.com

News: http://www.mcgraw-hill.com/news/overview.shtml

Investor Relations: http://www.mcgraw-hill.com/investor_relations

Corporate Responsibility: http://www.mcgraw-hill.com/cr/overview.shtml

Get news direct from McGraw-Hill via RSS:

http://investor.spglobal.com/CustomPage/Index?keyGenPage=1073751617

Release issued: April 14, 2008

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 Frank Briamonte Senior Director, Corporate Communications (212) 512-4145 (office) (201) 725-6133 (mobile) frank_briamonte@mcgraw-hill.com