Hi all I have used this prayer several times and it has worked every time - use it and don't forget if it works for you let other people know - the last line in the prayer is that in return you promise to cause the saint to be invoked - meaning cause him to be known by showing this prayer to help others 🙂 good luck - it will work!
O St. Joseph of Cupertino who by your prayer obtained from God to be asked at your examination, the only preposition you knew. Grant that I may like you succeed in the (here mention the name of Examination eg. History paper I ) examination. In return I promise to make you known and cause you to be invoked.
O St. Joseph of Cupertino pray for me
O Holy Ghost enlighten me
Our Lady of Good Studies pray for me
Sacred Head of Jesus, Seat of divine wisdom, enlighten me.
Remember, when you succeed in the exams then you should thank St. Joseph of Cupertino in the Newspaper or otherwise