Sekolah Izzuddin Shah (SIS) is the first all-male fully residential Islamic school in Malaysia.The school is noted for having dual education stream, academic and islamic.The islamic stream are based on silibus at Al-Azhar University and conducted fully in Arabic.
The school is build on 1959, after an idea by the first Menteri Besar of Perak, Ghazali Jawi. It were named after then Sultan of Perak, Sultan Yusuf Izzudin. Sultan himself officiated the school later that year. The administration of the school is by the Perak state government, and . The school were noted for having dual education stream, academic and islamic.
At that time, the school began to open classes for Form One by accepting Malay students from Malay schools throughout Perak, especially around Ipoh. The first group of students studied up to the Sijil Pelajaran Malaysia level. SIS offered lessons up to the SPM level and in the early 80s, the school began to offer lessons up to Form Six with the Sijil Tinggi Pelajaran Malaysia level. The school open up for female student only for Form Six. The school also accepted scholarship students from Brunei.
In 1972, the school experienced shutdown due to picket by school students.