If a man gave a woman a peck on the cheek in a book, is that sexually explicit? If a man and a woman held hands, is that sexually explicit? If a man and a woman said, "I love you," to each other, is that sexually explicit? 

I wouldn't say so.

So why is it sexually explicit if a man gives a man a peck on the cheek, a man hold hands with a man, two men say they love each other? Why's is it sexually explicit if a woman gives a woman a peck on the cheek, a woman holds hands with another woman, two women say they love each other?

Keep your religious morality out of our public schools. You can believe that God hates whoever you would like to, but in the same vein, I'm allowed to believe that he doesn't exist. The separation of church and state means public schools are not funded nor fueled by your religion. If you would like to send your child to a place that teaches in line with your religious values, send them to a private religious school.

A man who kisses a man is not being sexually explicit.

A person changing their name to one they feel suits them better is not sexually explicit.