Definitions for "Go to school"
Keywords:  putt, learn, break, pace, green
to learn from another players shot. Most commonly associated with putting and specifically seeing how a putt on a similar line to your own will break or run.
When you watch someone else's putt to learn the speed and break of the green. You can learn about the green's characteristics from any putt, so don't leave school to early.
To study the travel of a previous putt to 'read' the green.