When it was established, it had only 10 pupils. The number of pupils increased every year. In 1919, a shop lot which was situated at 178, Jalan Gopeng, Kampar was bought over to be used as the school building.
In 1940, the number of classes increased to twelve. Up until then it was only for the primary students. In the same year, the school was shifted to the new building along Jalan Kuala Dipang. The secondary classes started only after 1940. With the increase in enrolment, Sekolah Menengah Pei Yuan was established in 1958 in the same premise. In 1962, Pei Yuan High School was set up for the private students. Thus, to this day, the three schools co-exist in the same compound.
As the number of students increased steadily, the afternoon session was started in 1977. Much later, the number of classes increased from 47 to 49 in 1984 with a total enrolment of one thousand seven hundred and fifty pupils.
The following are the Principals who have served in S.M.J.K. Pei Yuan since
1962:-
Principal
Duration
Mr. Liu Szu Ping
1962 - 1969
Mr. Chong Kah See
1970 - 1979
Mr. Soong Sam Seong
1980 - 1992
Mdm. Loh Siew Ngoh
1.03.1993 - 09.09.1993
Mr. Lee Tat Chuan
6.10.1993 - 18.04.1996
Mr. Mok Soon Sang
1.05.1996 - 28.01.1997
Mr. Toh Ah Huat
16.05.1997