The aim of the study is to find the effectiveness of use of colour pens among the students. Colour pens used in examinations make it easier for the students and teachers to do their task. .Highlighting the important points makes the students to study and score marks easily as from a teacher's point of view it makes paper corrections easier. The use of colour pens in exams has been found to be excellent which makes the exam paper colourful and the exam paper looks neat. There are several methods in using colours in exams either for underlining or for writing the important points with colour pens. A survey is conducted among 100 students with 15 questions in google forms. The students attending the survey are from Saveetha Institutes of medicine and technical Sciences.results were entered in the excel sheet and analysed through SPSS statistical platform. From the results of our study, we conclude that the use of colour pens during an exam increases the grade of the student's performance. Eventhough is not statistically significant, in our study we found the females use colour pens in exams more efficiently than males. Also, the study proved that instead the use of colour pens consumed more time than usual, by practice the time can be adjusted sufficiently along with the colour pen use will increase the performance level in their exams.