Today’s children grow up with easy access to the Web and respective search engines. However, when children try to inform themselves about current conflicts, crimes, etc., general web search engines might show relevant but inappropriate content. Instead, search engines specifically aimed at children as searchers try to filter out inappropriate content or even operate on much smaller, manually curated indexes of appropriate documents only. To understand whether this is effective, we compare three general and three child-oriented web search engines based on a new German evaluation corpus of 50 queries spanning personal, political, educational, and entertainment information needs of children. For each query, we annotate the search engines’ top-10 results with respect to relevance and potential harm—a child-friendly result should be relevant but harmless. Our comparison shows that the child-oriented search engines effectively remove potentially harmful documents, while the general web search engines return more relevant documents at the expense of significantly more potentially harmful content.