Although his noble family sought other dreams for him and his father was not inclined for his son to follow painting, but Sadighi's excessive interest in painting and designing made him quit studying at the last year of school and go to Kamal-ol-molk Ghaffari with his friend Ali Mohammad Heydaryan and get present in Ghaffari's class at his School of Fine Arts.
Although his noble family had other aspirations for him and his father was not inclined for his son to pursue painting, Sadighi's intense interest in painting and design led him to abandon his studies at the end of school and join Kamal-ol-molk Ghaffari with his friend Ali Mohammad Heydaryan, where he attended Ghaffari's class at the School of Fine Arts.