High School

Not all rankings are created equally!  Make sure to take some time to understand what factors have gone into the ranking and determine whether those factors are what is important to you in your college search.
United States
US News & World Report - National University Rankings
The Princeton Review - Best College Rankings
Canada
Macleans - Ranking of Canadian colleges/universities. 
United Kingdom
Top UK University League Table 2014 - Search for top universities in the UK by course
Worldwide
THE World University Rankings
QS World University Rankings
Webometrics Ranking Web of Universities

The Smart Student Guide to Financial Aid:  Don’t know a PLUS from a Perkins? Don't worry - this site helps you find the loan that's right for you.
Sallie Mae:  A good general starting point for financial aid. This site also includes information on loans and grants.
College Scholarships:  Lots of information on scholarships and financial aid resources at the state and federal level.
FAFSA:  All US citizens applying for financial aid from the US Government or colleges are required to use the Free Application for Federal Student Aid, FAFSA. This can be completed on line from this Web site.
The College Solution:  A college blog by Lynn O'Shaughnessy to help students & familiies find the right colleges at the right price.
Financial Aid for International Students: The Smart Student Guide to Studying in the USA
IEFA:  International Financial Aid & College Scholarship Search
CAPPEX: scholarships web site for US institutions
US/UK Schools Awarding Aid to International Students:  Search by State in the US or click on the "Universities that Award Financial Aid UK" link
EducationUSA:  This site lists financial aid and scholarship opportunities for international students looking to study in the US