5 out 6 movies had someone in jedi-training, expect for ROTJ, where Luke wanted to finish the training, but already he was a Jedi-Knight.
TFM - Obi-wan in training with Qui-gon
AOTC - Anakin in training with Obi-wan
ROTS - Anakin in training with Obi-wan
ANH - Luke in training with Obi-wan
ESB - Luke in training with Yoda
ROTJ - non