Has a test-full of ads!
http://www.4tests.com/exams/examdetail.asp?eid=13

A lot of different ACT test prep sites- good ones!
http://www.epaccess.epchs.k12.il.us/act_psae_test_prep.htm

Find PSAT, SAT, or ACT* events happening in your area; Get test dates and registration deadlines; View our interactive Admissions Timeline; Make your own SAT or ACT quizzes; Sign up for a practice SAT or ACT- plus get links to our online games that boost your skills and actually make practicing for Test Day fun.
http://www.facebook.com/Kaplan

LOTS of links and summary of them!!!
http://www.internet4classrooms.com/act_sat.htm

GREAT! And it's FREE!!! This is a MUST DO!!!
http://www.number2.com/

Number2's ACT question of the day
http://www.number2.com/exams/act/daily/question/index.cfm?s=4zg5qaSrlPSQCYDbIy4vMvOT

The Web site contains more than 20,000 in-depth questions with answers and solutions for you to practice, and progress report customized to help you with your test preparation.
http://www.onlinetestprep.com/engine/default1.asp

Free ACT/ SAT Practice Tests- but there may be a fee after that http://www.petersons.com/testprep/default.asp?id=877&path=ug.pft.sat

ACT/SAT Tips of the Day!!!- Lots of free information, but some software for $25.95.
http://www.powerprep.com/

Lots of basic concepts to practice with for the ACT
http://www.purplemath.com/modules/index.htm

Many different uses, some free and some not, and easy sign-up. Also a GREAT skills review with scores provided for many concepts!!! Be sure to do in the ACT class!!! See home page.
http://www.testprepreview.com/act_practice.htm

Carroll County Public Library- Has many sample tests for free, but you need a library card for this library.
http://www.youseemore.com/Carroll/readyref.asp