Biology Forums - Study Force

A test-construction agency is preparing a survey test of science achievement in high schools. The following have been proposed as giving useful evidence the validity of the test.
   I.    Correlating the score with the grades students had earned in high-school science courses.
   II.    Having experts judge whether the test covers the objectives of science instruction.
   III.    Giving two forms of the test and seeing whether scores are consistent from one administration to       the other.
Which would actually provide direct evidence about test validity?
A) I and II.
B) II and III.
C) I and III.
D) All of them.

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