e-School System Development based on Different Cross-Platform by Hedi Agha Hassan Akar Taha Ibrahem Awin Nasr Abdul Supervised by Mohammed Q. Kheder Assistant Professor A Report Submitted to the Council of the College of Science at the University of Sulaimani in Partial Fulfillment of the Requirements for the Bachelor of Science in Computer Science May, 2022 (English) Cozerdan, 2722 (Kurdish)