Not everyone is eligible for expungement and in some cases, the crime you were charged with may not be eligible for nondisclosure. Here is a guideline of which records may be expunged or are eligible for nondisclosure:
Expungement – anyone who has been arrested but not charged with a crime, or completed a diversion program pre-trial may be eligible for expungement. This includes those who have had their cases dismissed, were not charged by a grand jury, or were later found not guilty of the crime. Anyone who was charged, convicted, and later pardoned may also be eligible for expungement.
Nondisclosure – while there are crimes that are not eligible for nondisclosure, in most cases, once you have completed probation, many crimes are eligible for sealing. Unless you have been assigned to probation, or convicted of another crime while on probation, your record may be sealed. Make sure you speak with an attorney familiar with nondisclosure orders first since there are numerous crimes which are ineligible for nondisclosure. New rules are in effect for crimes committed after 2015.