The students received the test on Wednesday and were given the same test again on Tuesday.

If the correlation between the twosets of scores is high then the tests arereliable.

Tests measure one idea. If the test items arerelated to each other then the student shoulddo well on the test. There are two ways to dothis.

Two types of the same test are made andadministered to students, for example Form Aand Form B.

This is usually created bytextbook publishing companies.