Which town did Tesla move to in 1870 to attend high school?

Tesla moved to Karlovac in 1870 to attend high school at the Higher Real Gymnasium. The school was in Rakovac, then a settlement associated with Karlovac, in what is now Croatia.

He lived with relatives while studying and completed a four-year curriculum in only three years, graduating in 1873. His physics education there proved decisive: demonstrations by his teacher Martin Sekulić helped intensify Tesla’s fascination with electricity.

A common mix-up is treating Karlovac as merely a modern label for the school’s location. Historical accounts often call the place Carlstadt or describe the school as being in Rakovac near Karlovac, but Karlovac is the canonical town answer used in biographies and quiz references. After graduation, Tesla returned to Smiljan and soon became seriously ill.