Since most schools, including preschools, start in late August or early September, Back To School is an important September theme for preschools, and since students are new and getting to know each other, an All About Me theme is also appropriate. Other theme options that work around the time of year include Apples for fall and learning about autumn, which begins with the September equinox.
Holidays and observances that fall in September can also be used for preschool themes. September is National Library Card Sign-up Month, which makes learning all about the library, complete with acquiring library cards for students, a good theme for preschools, and it ties in nicely with International Literacy Day on September 8th. September is also Classical Music Month and National Chicken Month. It includes Child Passenger Safety Week and National Dog Week, as well as Labor Day, Grandparents Day, Teddy Bear Day, Patriot Day, the International Day of Peace, Elephant Appreciation Day and National Good Neighbor Day. Classroom themes can be used for the entire month, by the week or even daily. Preschoolers learn best when having fun and playing, so theme-based activities should allow for plenty of play and include tools preschoolers can easily use, like appropriate scissors and glues.