Centers of Learning, located in North Hills, is a FABULOUS preschool! My daughter, who just turned 4, is enrolled there and loves it! It is a private school that is preschool through 12th grade, so if you love it for preschool and pre-k, you have the option to keep her there for the rest of her schooling if you choose. My son, who is now 7 and my oldest daughter, now 9 also go to school there and started when they were in preschool. I am very happy with the school. I am pretty sure there is no waiting list. I do not think they offer a 2 or 3 day schedule, however, I think only a Monday-Friday option. You do have the option of half-day or full-day, however. If you want to stop by for a free tour, call and ask for an appt. with the preschool director (who is also the kindergarten teacher) Mrs. Margo. The number is ###-###-####. The rates are affordable, compared to other preschools, which can be very pricey! Good luck!