What is the ruling on studying from collections and leaked materials for the القدرات and التحصيل tests?

The ruling on compiling exam questions has some details: If these compilations restrict the exam questions in a way that nullifies the meaning and purpose of the examination, or if the organizing body prohibits their publication, then it is not permissible to publish them or to use them. However, if they are free from these two matters, then there is no harm in publishing and benefiting from them.