I'm not sure how helpful this is/is not...but since Sela was mentioned as a likely option, I thought I'd encourage you towards it. My daughter was in PreK-4 this past year and we're going to re-enroll her for Kindergarten. It's been a really great experience! We love the language immersion model...even though our family has no connection to Judaism, the Hebrew she's learning is great for expanding her mind & cultural awareness. The school is definitely non-religious, just cultural education. Each of the Hebrew instructors are required to be native speakers, so it was cool when one of my colleagues (from Israel) was speaking with my daughter & he said that she doesn't have an American accent...that she sounded native!

If you get Sela, I'm certainly an advocate for enrolling your child there.