The College is sealed off to protect the students and staff from whatever or whoever has been sapping magic from victims. Zaccheroni puts the students' survival abilities to the test, but with a catch: no sorcery allowed.
The College was sealed both 
physically as well as by sorcery.
.تمّ إغلاق الكلّيّة فعليًّا وبالشّعوذة أيضًا
Il College è stato isolato dal mondo esterno 
sia fisicamente che magicamente.
O ginásio selou o lugar tanto
fisicamente quanto com feitiços.
Колледж был запечатан как физически,
так и с помощью магии.