Daycare centers are contractually obligated to run thorough background checks on everyone they hire, sub-contract, or utilize for special events and presentations. The Child Care and Development Block Grant Act of 2014 requires criminal background checks for all staff members at child care centers, even if they do not directly care for children.
If you want to show high initiative, go to your local police station and request a background check, at your own expense. Then, bring the results with you to your interview. If you cannot do this, due to time or finances, at the very least, you should offer to take the first step. Background checks for daycares may include various criminal checks, drug screening, motor vehicle records, and a sex offender registry search.
Assure the interviewer that you are qualified to work with children and willing to comply with any background checks required.