The Islamic Boarding School is always connected to the institution which produces the rebellions behavior and
building radicalism in many Muslim countries, i.e Pakistan, Afghanistan, and Indonesia. The radicalism of
Islam is always called Islamic Fundamentalist. The purposes of the research are (1) to describe the Islamic
values which has been taught at Islamic Boarding School (especially at Darul Ma’rifat Islamic Boarding
School at Kediri, East Java), (2) to describe the nationalism which has been taught at Darul Ma’rifat
Islamic Boarding School at Kediri, East Java), (3) to describe the relation between Islamic Values which has
been taught with nationalism of the students (santri) at Darul Ma’rifat Islamic Boarding School at Kediri,
East Java. The research was based on quantitative studies. There were twelve thousand two hundred twenty
seven pupils at Darul Ma’rifat Islamic Boarding School Kediri, East Java; however, only a few pupils has
been involved in the research; three hundred and two pupils as a respondent. The data had been collected by
observation, psychological scale, and documentation. The research found that there were correlation between
Islamic values and Nationalism. Therefore, although the pupils had been taught with the Islamic Values, the
stick on the nationalism Islamic belief is very important to build peace and harmony for Indonesia. Then, they
never thought that Islamic Values should be implementeded without tolerance and respect to another religious
belief.
Keywords: Fundamentalis, Nationalism, Islamic Boarding School