新しん古こ典てん学がく派は

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Meanings

1

noun

neoclassical school (of economics)

Refers specifically to the neoclassical school of economic thought, emphasizing supply and demand, marginal utility, and rational choice.

典code, ceremony, law

学study, learning, science

派faction, group, party

古こ典てん派は
古典派 refers to the classical school of economics (e.g., Adam Smith), while 新古典学派 is the later neoclassical school.
ケインズ学がく派は
ケインズ学派 is the Keynesian school, which often contrasts with neoclassical approaches in macroeconomics.

Compound of 新 (neo-), 古典 (classical), and 学派 (school of thought). A direct calque from English 'neoclassical school'.