That's hard to say--it might or might not, depending on who's running the check and how intensive it is. If its not for something that's security sensitive or government-related, hopefully not, but the case being dropped wouldn't be the reason why. Traditionally, Class C cases haven't been reported to the state criminal history database, and that's where most of the background check info comes from. But it is still out there and available if someone looks hard enough. The good news is that you'll be eligible to apply to have your case records expunged, and at that point, they'll be destroyed and completely unavailable. Good luck.
I also agree with Ms. Foley. Keep in mind that having the case dismissed is not the same as having it expunged (erased) from your record. A dismissed case still shows up as having been filed and later dismissed, so it's not a conviction, but that information is still on your record, unless you later take steps to have it expunged. That means filing a relatively simple civil lawsuit to put a petition before a judge asking her to issue an order for the record-keepers to expunge the records designated in the petition.
However, the effect of a court order for expunction is not necessarily complete erasure of all records everywhere. Certainly, the government agencies at the state level and lower (county, city, etc.) should comply, but the federal government is not subject to state court orders, and some private background-checking companies may not update their records. I believe that's part of what Ms. Foley is referring to when she says the records may be "available, if someone looks hard enough."
This answer is intended to be taken as general information and not as specific legal advice. You should always consult a qualified attorney and make him familiar with all the relevant facts in order to get proper legal advice. Every case is different, and they must be evaluated on a case-by-case basis. David N. Smith Austin, Texas firstname.lastname@example.org (512) 457-0100
Class C misdemeanors do not generally show up on a criminal background check, but they are still out there if someone looks hard enough (usually, the municipality would have to be contacted directly). They will also show up in the municipality whenever a police officer or the local district or county attorney pulls your criminal history.
Even if the case is dismissed, the arrest will still show up and it is possible that the fact that you completed the deferred probation might show up. In order to clear your criminal history as best as your can, you would need to get either a non-disclosure or an expunction. An expunction might not apply to a deferred disposition, but if it doesn't then a non-disclosure would.