School Bus Laws By State: When to stop and when not to!   This link takes you  to Drive-Safely.net that has a great article on when to stop for the Redlights of a school bus.

Alabama State Department of Education Pupil Transportation
Alaska Department of Education & Early Development / Pupil Transportation Funding
Arizona Department of Public Safety / Arizona State Troopers
Arkansas Division of Public School / Academic Facilities and Transportation
California Department of Education / Transportation
Colorado Department of Education / School Transportation
Connecticut State Department of Education / Connecticut Department of Motor Vehicles
Delaware Department of Education / Transportation Office
Florida Department of Education / School Transportation
Georgia Department of Education / Pupil Transportation
Hawaii Department of Education / Transportation
Idaho State Department of Education / Student Transportation
Illinois State Board of Education / Pupil Transportation
Indiana Department of Education / Office of School Transportation
Iowa Department of Transportation / School Transportation
Kansas State Department of Education / Transportation
Kentucky Department of Education / Pupil Transportation
Louisiana Department of Education / School Transportation
Maine Department of Education / School Transportation
Maryland State Department of Education / Pupil Transportation
Massachusetts Department of Elementary and Secondary Education / School Finance-Transportation
Michigan Department of Education / Pupil Transportation
Minnesota Department of Education / Transportation
Mississippi Department of Education / Pupil Transportation
Missouri Department of Elementary and Secondary Education / Student Transportation
Montana Office of Public Instruction / Pupil Transportation
Nebraska Department of Education / Pupil Transportation
Nevada Department of Education / Pupil Transportation
New Hampshire Department of Education / Transportation
New Jersey Department of Education / Student Transportation
New Mexico Public Education Department / Transportation Bureau
New York State Education Department / Pupil Transportation 
North Carolina Department of Public Instruction / Transportation 
North Dakota Department of Public Instruction / School Transportation
Ohio Department of Education / Pupil Transportation Office
Oklahoma State Department of Education / Student Transportation
Oregon Department of Education / Pupil Transportation
Pennsylvania Department of Education / Pupil Transportation
Rhode Island Department of Education / Student Transportation
South Carolina Department of Education / Transportation
South Dakota Department of Education / School Transportation
Tennessee Department of Education / Transportation
Texas Education Agency / Texas Department of Public Safety
Utah State Board of Education / Financial Operations-Pupil Transportation
State of Vermont Agency of Education / New Hampshire State Police Troop G
Virginia Department of Education Pupil Transportation
State of Washington Office of Superintendent of Public Instruction / Student Transportation
West Virginia Department of Education / School Facilities & Transportation
Wisconsin Department of Public Instruction / Pupil Transportation
Wyoming Department of Education / Student Transportation
District of Columbia Public Schools / Student Transportation