Hi. Unfortunately, you've posted your question on a nationwide website, and there are many schools name Whittier in the U.S.; your best bet will be to contact the school directly and ask.
Some high school parents "carpool," where one might drive A.M. and another P.M.'s. Some older students in your neighborhood, who have drivers licenses, might also be able to provide transportation, although if your child gets involved in after-school clubs and other activities, it might be more difficult to have a "fixed pickup schedule"....Perhaps your daughter can just stay late and study in the library until you can pick her up, as another option.