To start with checking the licensing standard of the daycare and it should be properly displayed for everyone to notice. Check for the basic safety measures as well because children are at a greater risk of falling or bumping into things and getting hurt. The accreditation standard and policy comes next which should be acquired from the relevant authority to ensure the high level of service. You can verify all these from the local offices and agencies by calling them and find out if there are any violations recorded against the day care. You can also ask for any abuse at the center; re-inspection was done or whether the center was closed due to any incident or not.
As children can fall ill anytime or require the attention of a health care professional, there has to be such a professional present or available on call. The space available indoors as well as outdoors should be sufficient and not look overcrowded. It must be properly childproofed and also have proper policies and schedules for checking it regularly. Simple checks like the ropes of the window blinds are fastened with an anchor, covers of any outlet is placed firmly, placement of cribs are out of reach of windows or the blinds, proper gates are there at the stairs to block it off, high chairs and tables have straps to secure a child sitting on it can tell a lot.
Check for the qualification of the staff and their behavior as well as you would not want a prison school for your child but want a homely atmosphere where your child could learn new things. At least one member of the staff should have adequate knowledge about CPR, in the case of emergencies, which is bound to happen. The ratio of staff to a child should be low so that proper care could be given to each child in need. Their years of experience and staff retention are also a significant factor as children grow a relationship easily which would also show how happy the staff is working there.
Most importantly, the staff of a day care center should be disciplined themselves to instill it within children. They should not beat abuse or use harsh words to scold a child but redirect then to their parents instead. Parents should not be discouraged from entering the facility to observe even after enrolling and ask questions and must feel comfortable and relaxed at all times.