Backers of initiative petitions to eliminate teacher tenure and to allow an early voting period have submitted signatures to get the measure on the November ballot.
Teach Great, the group supporting the teacher proposal, says it turned in more than 275,000 signatures to the Secretary of State's office ahead of Sunday's deadline for groups to submit petitions.
An attorney for the early voting effort says 300,000 signatures were submitted.
Both measures would amend Missouri's Constitution. The teacher initiative would require school districts to adopt an evaluation system based on "quantifiable student performance data." The early voting proposal would allow a six-week voting period before state and federal elections.
Election officials must now verify the signatures to ensure the proposal qualifies for the ballot.