TheSchoolLibrary.com

Search Engines and Directories:
Google   
www.google.com
Yahoo
www.yahoo.com
Hotbot   Preferences let you limit results by country, region, domain, URL, or language.  A text-only display is also available.
www.hotbot.com
ipl2    Merger of Internet Public Library(IPL) & Librarians' Internet Index (LII)
http://www.ipl.org
Alltheweb    Promises sophisticated search options and deep coverage
www.alltheweb.com/
Metacrawler    Search several search engines at once here.
www.metacrawler.com/
Ask Jeeves    Try this UK (British) site offering searches and many other features www.askjeeves.com
Bing           From Microsoft www.bing.com
Twurdy     Scans search results and shows approximate reading level to help you find easier or more challenging text.   www.twurdy.com
For Elementary Students:

YahooKids  (formerlyYahooligans)  
www.yahookids.com www.yahooligans.com
AskKids   Designed as a safer, age-appropriate place for 6-12 year old searchers.
www.askkids.com
 cybersleuth      
http://cybersleuth-kids.com/
updated 21 Feb 2011