The Allentown Co-op Christian Nursery will hold a three-week summer program on Mondays, Wednesdays, and Thursdays, Aug. 6-23, 9 a.m. to noon, for children ages 3-6. The cost is $200. For more information call (609) 758-3208. Registration for the co-op’s September 2007 school year for students ages 2-5 is also ongoing.