Chris from Chippenham emailed us to recommend getting an early night, eating a good breakfast and downing three glasses of orange juice before any exam.
Jade from Altrincham says it's all down to treats - for every subject you revise, you get to read a whole chapter of your favourite book as a reward.
Revise with mates
But Stu,14, from Southend reckons taking a lucky charm into your test could be your ticket to a good grade.
Meanwhile Gemma, 10 from Ipswich, reckons you should get your mates around and revise together - that way you can test each other and make sure you know your stuff.