After finishing two classes of school at the Kharkiv Theological Seminary in 1889, Petrovsky was dismissed for not being able to pay for his tuition. Being 11 years old he left education for a job in the city working for a locomotive depot. In 1893, aged 15, he arrived in Yekaterinoslav (now Dnipro) where he found a job at the Bryansk Metallurgical Factory (today Petrovsky Factory).
