For those interested in improving their knowledge of liturgical sources, or really advancing in Latin, I recommend looking into the Liturgical Institue at Ealing Abbey, London, England.
Classes are taught in two week blocks, fitting neatly into a holiday schedule. Locals can commute by tube, or there is reasonably priced and comfortable accommodation on-site.
Ealing is a beautiful area of London, full of Victorian houses. The monks of the Abbey chant the Divine Office daily, and there are a number of daily Masses to choose from.
Course fees are low--and even lower when taken for graduate credit from the Catholic University of Leuven.
More information here.
Nathan Knutson, cathedral and diocesan director of sacred music, performing artist, father, lecturer on sacred music