獅子の子落とし
Meanings
1
testing one's children by putting them through hardship
Proverbial expression derived from the belief that a lion pushes its cubs off a cliff to raise only the strong ones. Used metaphorically for strict parenting or tough love.
His educational policy is exactly like 'throwing the cubs off the cliff'—a tough-love approach.
As the saying 'shishi no ko otoshi' suggests, it is sometimes necessary to deliberately place children in harsh environments.