Child rights activists and children's homes managers have opposed attempts to introduce condoms and birth control pills to schoolchildren.
The Nakuru Children's Home Initiative said that if the bill is passed, it will encourage immorality among children.
"The introduction of the contraceptives will ruin the future of the young people," Pastor Samuel Mwai told the Star in Nakuru town yesterday.
He said it would be contravening the Children's Act.
The cleric said that instead of advocating for introduction of contraceptives in schools, more effort should be made to instil good morals in children.
He said exposing schoolchildren to contraceptives would mean an early exposure to sex.
The bill was authored by nominated Senator Judith Sijeny.
She has however said the bill is being misinterpreted as some people have taken sections of the bill and quoted them out of context.
Sijeny said the bill does not propose giving students condoms and pills as suggested by leaders.
She said a lot of "rumours" are being peddled on the contents of the bill, which is before the Senate.
Last month, Sijeny appeared before the Senate Committee on Health and challenged those complaining that the bill seeks to allow contraceptives in schools to "pinpoint any section in the bill saying that contraceptives be supplied to schoolchildren."
She said her bill aims at providing a framework for the protection and advancement of the reproductive and health rights of women.