Did a bit of googling following on from stuff written in this thread, and found this article. A few months old, but doesn't matter. Is all nudity, even that which is ostensibly art, automatically sexual and/or porn? Should the teacher be suspended/fired? Poll coming, although I make no promises about the neutrality of the options.

start of article said:PETE PANSE is a talented and popular high school art teacher in Middletown, NY who uses traditional techniques to to train his students. In December 2005 Mr. Panse was suspended from his job for recommending that some of his advanced students consider taking figure drawing courses that included nude figure drawings. Mr. Panse is suspended from his job pending hearings after which he may be permanently fired, ending a 25-year teaching career. In the meantime, his students are sitting in study hall learning nothing and failing to prepare the materials necessary for their receiving scholarships.
In his discussions with students Mr. Panse mentioned several options for advancing their figure drawing skills; the local community college, a nearby frame shop that sponsors art classes, and the prestigious New York Academy of Art. He also described pre-college figure drawing programs at several other New York City art schools, and a highly successful art college prep program called the Mill Street Loft.
In addition to these established courses, Mr. Panse also indicated that he was considering the possibility of offering an intensive figure drawing program of his own (8 hours a day every Saturday for 35 weeks). This proposed course would also be open to area art teachers, and would have required that parents serve as chaperones to ensure a strong adult presence. Ultimately, Mr. Panse was unable to locate inexpensive space for a studio and was prevented from carrying out his plan because of the controversy that erupted over the proposal.
Panse told his students that if his own figure drawing class materialized, he would be obligated to submit any advertisement to the school principal for approval, and that a denial might preclude him from offering the course to his own students, for their consideration. The mere mention of the "possibility" of a "future" course, and discussions in the "theoretical" are what the school board regards as a fireable offense in this case.
What the charges are...
Specifically, Mr. Panse was charged with making “comments that students could construe as being of a sexual or personal nature...or using [his] position as a teacher to put students into any situation reasonably likely to make them feel uncomfortable because of the injection of sexuality into...the substance of [his] comments”. .......