A goody-too-shoes is someone who needs everything perfect. Even if it’s not theirs they will clean it up or make it tidy. If they don’t tell the teacher the right answer, they go right back at it.
#1 she’s such a goody-too-shoes!!
#2 if I didn’t get the right answer I would just give up
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. Penguin Books,1992. p. 38)