たしかに出生率の低下で子供の数が減り、学校でも生徒の数が少なくなっているのは事実ですが、しかし、これはまったくもってけっこうなことです。 It's true that there are fewer children due to the falling birthrate, and there are fewer children in the school, but that is all to the good.
(n)advancing and retreating; appearance and disappearance; one's daily activities; one's course of action; one's attitude
出処進退の潔さをわきまえている、と彼は言っているけれど、いざとなったらどうだかね。 He always talks as though he knows how to handle himself but you never know how he'll act when the chips are down.