I'm always hesitant when I see few reviews for any business; almost anyone can create a Yelp account, and review for a friend or family member; however, I can confirm that Purple Crayon is a legitimate and quality daycare.
I met with the director of The Purple Crayon recently, and I'm so thoroughly impressed at the cleanliness of the center, the programs offered, and the additional amenities. I observed how the teachers were very caring to the students, the students openly welcomed my daughter to their playtime, and their program is a lot of fun for kids. One of the teachers also showed me Tadpole, an electronic daily report personalized to your child, and I was absolutely floored at this service. The space and activities are perfectly laid out for children to run about, be safe and be entertained. There is an outdoor space available that the kids go outside to enjoy 2x a day (weather permitting). The price is average to high for this area (I've been quoted for daycare services that are several hundred less, but they aren't as clean, and they don't offer the daily reports).
In summary - this is one of the few quality daycare options I have observed in the area, and demand is VERY high. Our daughter is currently sitting #26 on the waiting list, but we pray everyday that all 25 before her drop out/decline the next available space. Note that there are not many full-time spaces available for the toddler program. Most people stay on once they get in because it is so difficult to get in. If you're pregnant, NOW is the time to go and put your child on the waiting list. read more