I think you are right. Theres a movie that Garden State Equality wants shown.
http://www.gardenstateequality.org/
I think the school doesn't need to teach my child about different family lifestyles or about being Gay. Some links for interested readers......
http://www.philly.com/mld/inquirer/news/local/states/new_jersey/16585431.htm
petition to sign against showing this film
http://www.gopetition.com/sign.php?petid=241 Steven Goldstein, the Chairman of the group Garden State Equality, says he's shocked that anyone would have a problem with this video, because it has won several awards and "it was shown at the White House in 2000- before educators and child advocates from across the country who praised the film." He adds if people don't feel comfortable with having their kids see That's a Family, "maybe New Jersey is not the right place for them."