4 ms·

Easy example: if the test results do not correlate with other test results and grades, but do correlate with family income, the likelihood of the test measuring

• WalterBright 3y ago
  > other test results What other tests? If those tests are better, why not use them? > and grades Grades are quite unreliable, as they are too easily manipulated (like grade inflation). For example, my high school physics teacher proclaimed that everyone in his classes should get As. He did that a little too loudly, and the administration had to ask him not to do that. Instead, during tests, he'd offer to help anyone answer the questions if they had any difficulty. He was a nice fellow, I liked him, but the grades he handed out weren't worth spit.
• seanmcdirmid 3y ago
  Grades might not correlate with aptitude. Actually, a lot of grade inflation going on in K-12 education. Straight A’s aren’t enough to get into even UW these days if you are coming from SPS. That an aptitude test correlated with family income isn’t weird, kids with well to do parents generally get more instruction, resources, and pressure to do well on these tests. All of that is useful in developing actual aptitude, although it is still very unfair.