Pre k and kindergarten options

I'm moving back to Las vegas, and my oldest is 5 now. She'll be going to kindergarten in September she missed the cut-off. I know that's a long time from now, but I also have a 3 year and wanted to know if any moms have some preschool options? I'm looking for them to be in a good school and in a safe environment. If you have any suggestions, please let me know!