Below is a list of kid-friendly search engines.
Enchanted Learning Animals for younger students
Kids Konnect - do not click on any ads.
Kids.Net.Au
Virtual Learning Resource Center
Sites used for student research
Biography.com (Biography Channel)
History.com (History Channel)
Photographic Dictionary Younger students
National Geographic for Kids - login is ajenkins@neusecharterschool.org, pw nationalgeo2014
Social Studies for Kids - for older students as you need to hit the X to close the ad first.
Meta-Search Engines