On 2012-02-28 - 2012-03-01 the student crypt of the bbz in Siegen took place again.
At the student crypto, teachers and their students of the upper school can learn the science of the secret language (cryptology) and try it out for themselves. The student crypto took place on three days: on 2013-02-28 the teacher training took place and on 2012-02-29 and 2012-03-01 the student day was offered.