Stageworks Theatre presents "The Wizard of Oz" on weekends this August.[/caption] Friday This is the last day to take advantage of free car washes at the the new Quick Quack Car Wash on Louetta Road. Customers remain in their vehicles while this fully automated and computerized car wash soaks, soaps, washes and polishes the vehicle. Quick Quack Car Wash, 5311 Louetta Road, Spring. 832-560-2003. www.dontdrivedirty.com Stageworks Theatre holds four performances of "The Wizard of Oz" this weekend. 7:30 p.m. (Fri., Sat.); 2 p.m. (Sat.), 3 p.m. (Sun.) $20-$31. Stageworks Theatre, 10760 Grant Road, Houston. 281-587-6100. www.stageworkshouston.org Saturday Spring ISD will host the Care Van—a nonprofit organization that travels throughout communities to provides vaccinations—at Dekaney High School. State law requires students to obtain immunizations before they start the school year on Aug. 17. The vaccinations are free, and students should bring their immunization records. 9 a.m.-2 p.m. Dekaney High School, 22351 Imperial Valley Dr., Houston. 281-891-6000. www.springisd.org Spring ISD hosts a family resource expo at Dekaney High School. This event is open to families with students from pre-kindergarten through 12th grade who are new to the district and need to register. The event will feature workshops regarding student preparation for school and college readiness. Families can also take advantage of giveaways, including backpacks donated by Texas Children's Hospital and school supplies. 9 a.m.-3 p.m. Dekaney High School, 22351 Imperial Valley Dr., Houston. 281-891-6000. www.springisd.org Barbara Bush Branch Library offers an introductory demonstration of Tai Chi, a Chinese martial art. 10:30-11:30 a.m. Barbara Bush Branch Library, 6817 Cypresswood Dr., Spring. 281-376-4610. www.hcpl.net