Educational institutions are supposedly not immune from the influence of radical ideology. This research concluded that: (1) Some teachers acknowledged that the concept of radical Islam may have been spread among students because of their lack of religious knowledge; (2) The units of Islamic study in the schools is progressing well but there is no guarantee of immune from radicalism since most of the learning process is released to a third sides; (3) In the textbooks and worksheets there are various statements that may encourage students to hate other religions and other nations. It can be concluded that the strategy of deradicalization may be implemented are preventive deradicalization and preservative deradicalization of moderate Islam, andcurative deradicalization. *** Lembaga-lembaga pendidikan diduga tidak kebal terhadap pengaruh ideologi radikal. Penelitian ini menyimpulkan bahwa: (1) Beberapa guru mengakui ada­nya konsep Islam radikal yang mungkin menyebar di kalangan siswa karena kurangnya pengetahuan keagamaan; (2) Unit-unit kajian Islam di sekolah-sekolah berkembang baik namun tidak ada jaminan adanya kekebalan dari radikalisme karena proses belajarnya diserahkan kepada pihak ketiga; (3) Di dalam buku rujukan dan kertas kerja terdapat beberapa pernyataan yang dapat mendorong siswa untuk membenci agama atau bangsa lain. Dapat disimpulkan  bahwa ada beberapa strategi deradikalisasi yang dapat diimplementasikan  yaitu deradikalisasi preventif, deradikalisasi preservatif terhadap Islam mo­derat, dan deradikalisasi kuratif.