Not all search sites default to their safe search option, or even have one.
Best to check out search sites before using them for homework or in the classroom.
Mainstream Search Tools
Filters:
Google is our webmaster's preferred search web search site. For better results, click on the the gear icon when searching and check the following settings... : SafeSearch :… learn more
Wolfram/Alpha
Compute expert-level answers using Wolfram’s breakthrough algorithms, knowledge base, and AI technology Wolfram|Alpha is a fundamentally different way to get knowledge and answers, processing questions rather than matching… learn more
Bing
Bing is another popular search engine which many prefer. Try a few and see which one you like. learn more
Yahoo Search
Back when the Internet was starting, Yahoo was the go-to search web site. Yahoo still maintains an independent web search engine that provides good results. learn more