I was unclear when I said this the first time:
" Regularly my students find content that is publicly available on different websites. Sometimes those websites are of questionable or indeterminate quality."
What I meant was, inside the Gale database, they would turn up sources that were just websites. If I asked them to evaluate those websites for authority, it was sometimes not clear why this source should be considered authoritative. I was disappointed with Gale for including sources that seemed of questionable value.