The companies listed below are all FAA approved computer testing centers.  You can click on each site to see which one offers the best deal in your area. 

CATS-Computer Assisted Testing Service

LaserGrade Computer Testing

Listing of all FAA knowledge tests and their passing scores. Here is where you go to find out all about each knowledge test. Nubmer of questions, passing score, how long you have to complete it. It also lists the prequisites for taking each test.

Knowledge Test Question Bank

Knowledge Test Guides

Private and Instrument Knowledge Tests "On Line"   A great little web site by PilotPal.com.  It allows you to develop an "on line" test for practicing the Private and Instrument FAA Knowledge Test.

Kip's FAA Written Tests Another great knowledge test preperation site for your students. It come highley recommended by our viewers.

Here is another one!