Besides the art school, King Vajiravudh also established the commerce school in 1916, to teach people
to trade. It was named Wat Maha Pruettharam Commercial Vocational School.
Then the school moved to Wat Kaew Jam Fah Lang, so its name was changed to Wat Kaew Jam Fah Lamg
Commercial Vocational Dchool.
Thecurriculum was constantly improved until the school became known as Siphraya Polyechnic College, as we
know it today.