OKLAHOMA CITY (AP) — The Oklahoma State Department of Education hit an online charter school with a half-million-dollar fine for exceeding the legal limit on administrative costs.

Epic One-on-One spent 5.58% of its total budget on administrative services, exceeding the 5% cap set by the state, according to an email the state education department sent to the school's superintendent.

In Oklahoma, school districts serving more than 1,500 students are mandated to keep costs for administrative services at no more than 5% of their budget. Epic's $530,527 penalty is equal to the excess amount money t...