Two years ago I interviewed local teachers, and docents and program directors from several other botanical gardens in the bay area. From that and State-published curriculum content standards myself and another board member, Dr Peter Fritsch designed a teaching curriculum for 4th and 5th grade elementary students. Quarryhill staff have taken the program over to continue and expand it--we are now in our third season, hosting at least one class per week, amounting to several hundred per season, and the kids uniformly are delighted by their teaching tour of the garden. Teachers frequently report that it's the best, or among the best, field trips they've ever taken.