He's famous for being a strict, no-nonsense coach.
Sparta was a powerful city-state in ancient Greece.
Spartan education; hard training
Abbreviation of スパルタ教育; refers to a rigorous, demanding style of education or training reminiscent of ancient Sparta.
See also: スパルタ教育
His parents were strict, and he was made to study hard every day.
Describes a person, method, or environment that is very strict and demanding, often in the context of education or training.
That teacher is strict, so there is a lot of homework.
The parents raised their children in a strict, Spartan manner.
甘い describes lenient or indulgent treatment, the opposite of the harsh discipline implied by スパルタ.
Spartan education; strict training; hard discipline
From English 'Sparta', ultimately from Ancient Greek Σπάρτη (Spártē). The extended meanings derive from the reputation of ancient Sparta for rigorous discipline and training.