Tri-Valley subscribes to the World Book Online Database. 
    User name: trivalleydowns
    Password: vikings ​

• World Book Discover: Find answers on various topics, use research skills, learn life skills, play games and more! For grades 5-12.
• World Book Student: The complete World Book with multi-media items, web links, periodicals and more for all ages. For grades 5-12.​
• Timeline: Take your research and create a timeline online! This tool is geared for middle and high school students.
• e-books: Includes a collection of K-12 non-fiction books and classic literature books.