S (school bus) endorsement. You'll have to get the "P" (passenger) endorsement first, then undergo a background check.
Once you have the endorsement, you can keep it. As far as I know, there isn't a renewal on that endorsement.
Class C CDL with School Bus endorsement.
Class C CDL with School Bus endorsement.
You need the passenger (P) and School Bus (S) endorsements.
Yes, that's part of your CDL physical.
The average school bus weighs about 7 ton (14000) lbs if gross weight was over 26000 lbs the driver would need a CDL not a bus drivers endorsement and most have air over hydraulic brakes
First, you take the written tests (General Knowledge, Air Brakes (if applicable), and Passenger). Then, you have to submit fingerprints and undergo a state background check (for the S endorsement, which is a passenger endorsement specifically pertaining to school buses). You'll then get a learner's permit. Once you're ready for your road test, you'll conduct a road test in a bus of the appropriate class, show that you can do an adequate pre trip inspection, and, if you pass, you get your CDL. If you do this before your background check comes back, you'll have to get a duplicate issued once it comes back, in order to have the "S" endorsement on your licence - you won't get it until you pass the background check.
Only if you wish to track school buses
Depends on the Gross Vehicle Weight Rating. If it's under 26,000 lbs., you'd need a Class C CDL with the "S" endorsement for school bus (a passenger endorsement plus background check). For the larger ones which gross over 26,000 lbs., you'd need a Class B CDL with "S" endorsement.
no and i dont know why
Your question doesn't make any sense. What is a "26,001 lbs. restriction", exactly? A Class B CDL covers commercial single vehicles with a GVW of 26,0001 lbs. and higher. You would need to get a school bus endorsement before driving a school bus, though.