In my opinion, no, because once the time for an ACD (Adjournment in Contemplation of Dismissal) to be finished has passed (usually 6 months) you should no longer have to disclose it since the charges are now dismissed.
It sounds like you were named as the subject of a pending criminal proceeding that resulted in an ACD. If you do not mention that case that was dismissed and sealed, the employer might move for termination based on your answer. The question is not worded well but it is possible that your ACD might have to be disclosed. Good luck.
I have been a criminal attorney in New York for almost 25 years. website: Brooklynlaw.net Phone #: 718-208-6094 email: firstname.lastname@example.org. This answer is only for informational purposes and is not meant as legal advice.
Technically an ACD was an adjournment in contemplation of dismissal. Therefore, it was resolved in your favor- it was dismissed. It is unknown what charge was ACDed, was it a felony or a misdemeanor? If it was a violation, then it was neither a felony nor a misdemeanor. It may not have been a pending criminal proceeding if it was a violation. You can also answer yes and disclose it was an ACD which is relatively minor.
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Assuming your ACD has expired without you re-offending, you do not have to disclose the matter since it was resolved in your favor and/or subsequently vacated.