The New York Times’ college admissions blog, was discontinued in 2013, but it contains four years’ worth of superb, well-considered admissions advice, as well as tips from admissions officers, student checklists, and information on schools.
College Admission by former deans of admissions Robin Mamlet and Christine Vandevelde
Widely recognized as the bible for applications. The blog features an immense wealth of easily searchable expert advice about the process.
Harvard’s Admissions Department blog
A great deal of solid advice about preparing applications.
The Huffington Post’s College Admissions site
A lot of useful information here.
A comprehensive guide to selecting the right college.
Some exceptionally thoughtful, persuasive articles on the state of the modern application process.
Created by the National Center for Education Statistics, contains a wonderful amount of easily-searchable information—most of which is similar to US News' information, but is more objective, and maybe more comprehensive. It also has diversity statistics, admissions data, and popularity of each major offered. This is the best resource for statistical data on colleges.
The National Association for College Admissions Counseling
Resources for students, families, and counselors. This site doesn’t have information about individual schools, but it has lots of intelligence on the process itself.
US News & World Report
Best known for its much-ballyhooed college rankings, also provides large amounts of information about class size, acceptance rates, average GPA/SAT/ACT, and percentage accepted early. Its rankings are very influential, and not completely pointless, but it is essential to know that these ratings are deliberately gamed by colleges in order to boost competitiveness.
College Results Online
Similar to US News, but has a college-comparison tool that lets you cross-reference admissions rates, transfer rates, and more.
And finally, when in doubt, call the admissions office! Officers are often very happy to answer questions about their applications or expectations. This, however, should not be done by the parents, unless it concerns financial aid. Whenever possible, students should be urged to call admissions departments with clear, written down questions.