Intermediate efl texts

Since some of the members at this forum are teachers I thought that you might be able to help me with the following problem. I'd like to practise reading with one of my students, but I don't know where to find texts appropriate to her level. I don't want to confuse her with texts that are too difficult for her and I was wondering if there is an efl site, which grades articles and texts according to their difficulty? Thx.