MATH and SCIENCE: 
http://www.khanacademy.org/

SCIENCE, MATH, HISTORY:  
http://www.hippocampus.org/?uak=ipw

AR BOOKS: (free)  
http://www.bookadventure.com

Test-Taking Websites: 
Dealing With Test Anxiety
http://www.studygs.net/tstprp8.htm

 The Essay Type Exam
http://www.studygs.net/tsttak4.htm

 Index Cards -- Vocabulary
http://www.how-to-study.com/ind_crdsv.htm

 Multiple Choice Tests
http://www.studygs.net/tsttak3.htm

 Short-Answer Tests
http://www.studygs.net/tsttak5.htm

Study Guides and Test-Taking Strategies Hotlist
http://www.eop.mu.edu/study/

Ten Tips for Test-Taking
http://www.studygs.net/tsttak1.htm

Test-Taking Skills: Effective Study Techniques for Essay Tests
http://www.csbsju.edu/academicadvising/help/testskil.html

Test-Taking Skills, Part I: How Do I Show What I Know?
http://www.sla.purdue.edu/studentserv/
learningcenter/handouts/testskls.htm

Test-Taking Strategies
http://www.d.umn.edu/student/loon/acad/strat/test_take.html

Test-Taking Strategies
http://acs2.byu.edu/ccc/Learning_Strategies/test/strategy.htm

Tips on Test-Taking
http://www2.ncsu.edu/unity/lockers/users/f/
felder/public/Papers/testtaking.htm

Tips on Writing the Essay-Type Examination
http://www.csbsju.edu/academicadvising/help/essayexm.html

True/False Tests
http://www.studygs.net/tsttak2.htm

OTHER helpful education websites:
http://www.kidsknowit.com/