Can you become a Sport Pilot instructor with a Private rating?

From Mark, we have another question about Sport Pilot:

Does a current Private Pilot have to get a Sport Pilot rating as part of the requirements of being a CFI-SP Sport Pilot flight instructor?

Mark, the FAA has a table (pdf; it’s hard to track down!) that lists all the requirements for various SP certificates. CFI – Sport Pilot lines that are relevant to your question are here:

Training requirements:

• 150 Hours – Total
• Additional flight training requirements for each category and class.
• Sport Pilot certificate or higher
• Category and class privileges or rating

Testing requirements:

• CFI Recommendation – Knowledge test – Practical Test

So, you have to have at least 150 hours total time, and hold at least a sport pilot certificate with the appropriate category & class for the type of aircraft you will be teaching in. Aside from that, you’ll need to get a CFI endorsement and pass the knowledge & practical tests.