Sudirman studied diligently at school; his teacher Suwarjo Tirtosupono later recalled that Sudirman would already be studying second-term lessons while the class was still in term one.
Soedirman belajar dengan tekun di sekolah; gurunya Suwarjo Tirtosupono menyatakan bahwa Soedirman sudah mempelajari pelajaran tingkat dua di saat kelas masih mempelajari pelajaran tingkat satu.