The college web page grade description (as of 2/6/2000) of the Y grade reads:
Y General Withdrawal This grade may be given by the instructor at his/her discretion at the end of the term when circumstances dictate that none of the other grades are appropriate.
The "update" to the college catalog reads:
Y --- Special Withdrawal (All students are provided information regarding the poten- tial negative effects of the 'Y' grade. The decision to grant the special withdrawal is based on what is best for the student in light of his or her educational objectives. The instructor will complete the standard 'Y' grade form, specifying the rationale for the special withdrawal.)