Many people interested about the intricacies of programming do not really like to learn through traditional printed materials or even through classroom instruction. You can establish a website for XML education easily enough by posting lots of information about the subject, but you may want to enlist the services of an experienced web designer so that you can test the knowledge of incoming students and potential graduates.
Prerequisite Subjects for XML
Usually a practical project is the best way to assess potential skills. Give the prospective students a short test or project complete, perhaps a site to frame a UK TV stream like this site. Although obviously only a draft, simple proof of concept would be sufficient in this situation.
Checking XML Mastery
Further Reading: http://www.uktv-online.com/uk-tv/british-tv-overseas/