Depending on what stage of growth you’re at, your Startup School mentor should still be able to be helpful.

Most companies in the program are in the 0-1 phase, but there were a few in my group that were 1-N. The program format is flexible, so it’s fairly easy to tailor content to your audience.

YC core has a similar dynamic, and individual companies in a batch fall along a fairly wide range in terms of stage / progress. They only break out a formal growth track once companies have >50 employees.

YMMV depending on your mentor of course.