I enjoyed the Ilum episode.
Fitting that the younglings exhibited character flaws that they needed to overcome to mature.
As to the child endangerment issue that some have raised: meh. The lightsaber is a weapon; danger is part of being a Jedi. Besides, Master Yoda seemed to have a sense of what was up, and I'm willing to assume he had a responsible sense of how ready and able the younglings were to face the test.