We were taught that gays and lesbians were our brothers and sisters who had been persecuted in the past and who were persecuted in the present, particularly in some non-Western countries.
The religious beliefs of those who persecute gays and lesbians was explained to us. And the psychology of those who persecute gays and lesbians was also explained to us.
And the history of gay and lesbian liberation was also taught as well as the struggles of today, such as Civil Unions.
So at school we were taught about homosexuality just as we were taught about religion = and left to make up our own minds.