Schools in Israel will undergo \"bio-chemical attack drills\" today. The students will practice their response to unconventional-weapon attacks, and the exercise will test the readiness of the educational system in general to emergencies of this nature. Education Ministry Dir.-Gen. Ronit Tirosh and IDF Home Front Commander Maj.-Gen. Yosef Mishlav will take part in a large-scale exercise in the Shmuel HaNagid school in Herzliyah.