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