Ms.umbreen, I think you need a student visa for Pakistan:

For Student Visa, these documents are required:

1. Admission notice from the concerned academic institution/university in Pakistan .
2. No Objection Certificate (NOC) from the Ministries of Education and Interior of Pakistan. (In case the NOCs are not available with the student, the Consulate would refer the case to the concerned Ministries of Pakistan to seek their clearance prior to issuance of visa. This may take more than a month.)
3. Evidence of financial support for studies in Pakistan .
4. Air ticket or evidence of adequate arrangement for travel by road.
5. No Objection Certificate from the local community Education Bureau of the Student’s domicile area.
6. In case of Muslim students intending to study in Pakistan , original recommendation letter from the China Islamic Association would also be required.
ENTRY VISA TO STUDENTS OF DEENI MADARIS
Entry Visa for students of Deeni Madaris will be granted after clearance from Pakistan and NOC from their home government.