On the contrary I think kids being taught about homosexuality in school would be something to be upset by.
Am pretty sure most of the country would too.
I agree just like it would be unsuitable to teach them about anal sex between men & women, oral sex, S&M and a 1000 other alternatives.
Kids will ask their own questions when needed and then it's up to us adults to reply in an appropriate way.
A couple of years ago I was teaching a class of around 30 x 14 year olds and telling them about the work experience placements they were going on.
To the amazement of the rest of the class one girl said that if she went on a placement and she was working with gay people, she would walk out.
Both me and the rest of the class challenged her on it but she was adamant and then we got to the root of the cause.
It came out that her Uncle had 'come out of the closet' 4 years earlier and the whole of the family had ganged up on him and barred him.
Later on in the afternoon I was delivering an E&D lesson when she declared all blacks should be sent back.
I asked her about the Phillipino girl sitting next to her and she said she was OK.
I asked her about my black colleague and she got the thumbs up to stay also.
Once again by being calm and measuring my questions it transpired that all her family voted BNP.
So viewers, it isn't the teaching of this stuff in school, it's getting to the root cause of why people think like this in the first place and it's usually parents.