'The Two Princes' would confuse a kindergartener much less than it would most fifth- or sixth-graders, because kindergarteners haven't had as much time to absorb assumptions that mark such things as the sort of things that 'should' be confusing.
You also aren't supposed to use the Constitution to score points on issues quite that ridiculously specific.
I fundamentally disagree that kindergardeners would be less confused than fifth graders. Teaching them about homosexuality is NAMBLA's dream. What are you talking about with the constitution?
Do you think they are being taught about heterosexuality qua heterosexuality via more traditional fairy tales and such? If so, why is it that they should have a concept of heterosexuality? If not, can you admit that a five-year-old is not likely to interpret 'The Two Princes' as sexual and hence will have vanishingly little reason to be confused by a new and interesting type of fairy tale?
I mean exactly what I say with the Constitution. You're using it as a cheap political tool.