Generally, we have found that at most institutions failing grades, such as F or E, are calculated into the students' grade point average and are equivalent to zero grade/quality points; and Incomplete or Withdraw grades, such as I or W, are not incorporated into the GPA calculation. In these cases, students with failing grades should be included in your placement validity study, while students with Incomplete or Withdraw grades should not. It is also fine to include students with Incomplete or Withdraw grades in your file and as you are completing your grade mapping table you will note that these grades have “No Value” and will therefore not be analyzed in the study.
These are only given as general guidelines. If you have a large number of students who failed the course you wish to study for any reason other than doing poorly on the tests and/or class work (such as, dropping the class or leaving the school without officially withdrawing), or if your Incomplete or Withdraw grades are calculated into the GPA, please contact the ACES staff at [email protected] or by calling 800-439-8309 to discuss your specific situation.