Yes! Access and assign Spanish texts from the library by scrolling to the bottom of the filters on the left-hand side and opening the language filter. Then choose Spanish.
You can also click "Spanish Content" from the categories at the top of the Library's Browse All Content page, or you can click Library in the navigation bar, then click "Spanish Texts."
Teachers and students can also view the site itself in Spanish by clicking the "ESPAÑOL" button at the bottom of the site.