CLEP Placement Validity Studies

Can we get placement information for our math and English courses at the same time?
If my institution primarily gives Pass/Fail grades, can we conduct a placement validity study?
What’s the minimum number of students needed for a retention study?
Can we include other commercial exams as a predictor in my ACES study?
Which College Board testing programs are supported by ACES?
How do I analyze and articulate my institution’s CLEP credit and placement policies within ACES?
Are grades required for a CLEP Placement Validity Study?