  In this era of computerization, education has also revamped itself and is not
limited to old lecture method. The regular quest is on to find out new ways to
make it more effective and efficient for students. Nowadays, lots of data is
collected in educational databases, but it remains unutilized. In order to get
required benefits from such a big data, powerful tools are required. Data
mining is an emerging powerful tool for analysis and prediction. It is
successfully applied in the area of fraud detection, advertising, marketing,
loan assessment and prediction. But, it is in nascent stage in the field of
education. Considerable amount of work is done in this direction, but still
there are many untouched areas. Moreover, there is no unified approach among
these researches. This paper presents a comprehensive survey, a travelogue
(2002-2014) towards educational data mining and its scope in future.
