At the it was voted to forbid sign language in schools and to only use speech and lipreading. despite the american delegates voting against it, many deaf schools in america forbade the use of sign language. deaf teachers were no longer allowed to teach because they were unable to with teaching the deaf students to lipread and speak. students who signed in class often were forced to wear mittens with short strings attaching them to each other so that they couldn't sign.

Milan Conference

Explanation:

The conference basically divided into two factions. Those who support the use of sign language and those who don't.

The people who don't support sign language argued that Since deaf students only consist of a small numbers of students, forcing the schools to provide experts in sign language is not cost efficient. So, they wanted deaf students to adapt and learn  lipreading so they can learn alongside with non-deaf students without using any signs.

Those who support the sign language believe it was a form of subtle discrimination. It is very hard for children to actually learn how to lipread and required to understand the subjects that are being taught at the same time. so they see sign language as something that extremely necessary.

In the end, those who oppose sign language managed to convince more people. So many deaf schools in America forbade the use of sign language.