Here is the full list of all 19 Keyhole Spy: Teachers achievements.
Meet Laura
Take a good look at Laura
Meet Charlotte
Take a good look at Charlotte
Meet Clara
Take a good look at Victoria
Take a good look at Clara
Collect 100 glasses
Collect 100 textbooks
Collect 100 pencils
Collect 100 erasers
Collect 100 globes
Meet Victoria
Take a good look at Eleanor
Meet Jessica
Meet Eleanor
Take a good look at Jessica
Take a good look at Gina
Meet Gina