Some useful info:
Holidays for private schools in Sindh during 2007
Holiday Number of days taken off
*Summer holidays 75 *Winter vacations 10 (extended to 18 days last year) *Exams/result preparation 20
Total: 105 (= 15 weeks)
*2-day weekends (Saturday & Sunday) 74
Religious holidays: *Ashura 2 *Chehlum 1 *Eid milad-un-nabi 1 *Shab-e-Barat 1 *Shab-e-Mairaj 1 *Eid-ul fitr 3 *Eid-ul-Azha 3 Total: 13
Other gazetted holidays: *Kashmir day (Feb 5) 1 *Pakistan Resolution Day (March 23) 1 *Labour Day (May 1) 1 *Independence Day (August 14) 1 *Quaid death anniversary (Sept 11) 1 *Iqbal's death anniversary (Nov 9) 1 Total: 6
Provincial/local holidays: *Shah Abdul Latif Bhittai's Urs 1 *Abdullah Shah Ghazi's Urs 2 Total: 3
Unscheduled holidays: 10 (average per year) Total holidays per year 211 (= approximately 30 weeks) - Courtesy: Teachers Resource Centre (Dawn)
I don't remember this many holidays. I went to school there till class 10. If there was a strike, we had to make it up on Saturday. Was happening a lot in 93-94 in Karachi.