The state Senate has given final approval for a bill which postpones use of the Keystone Exam as a high school graduation requirement. The bill which now heads to the Governor's desk delays the implementation of the Keystone Exam until at least the 2021-2022 school year, and allows school districts to develop other ways for students to demonstrate their academic proficiency. Some lawmakers want to eliminate the Keystone altogether, saying this bill marks a good start and a major step toward education reform. Gov. Tom Wolf says he will sign it.