Oklahoma has an online charter school that is growing “at breakneck speed,” but producing pathetic results for students. This is not unusual. It is typical for online charter schools to recruit students, experience high attrition, and produce crummy results.

Oklahoma’s largest online charter school is on a track of explosive growth, nearly tripling its enrollment over three years, to almost 8,500.

That pursuit of lightning growth by Epic Charter Schools – a goal affirmed by its co-founder – shows no signs of letting up. Epic officials predict enrollment will near 10,000 by mid-school year.

But the trend is raising concerns from one top online charter-school regulator about whether there is too much turnover of students. And at least one national report warns that rapid expansion at virtual charter schools can compromise academic achievement.

Epic’s unconventional efforts to drive enrollment also have raised eyebrows. Among other tactics, it gives out concert tickets, vacations and other prizes to students’ families as rewards for referrals of students. The school also spurs referrals by depositing bonus money into “learning fund” accounts that families can use to buy their curriculum or computers or defray fees for extracurricular activities such as dancing or club sports. Epic told state officials the rewards are not paid for with state funds.

Epic administrators say their system is growing rapidly because parents and students love it. Parents of some students applaud the program, saying it gives them the freedom of home-schooling with some of the benefits of a public school.

“Clearly, we’re providing a quality of service and education that families are enjoying and appreciate, or we wouldn’t be continuing to grow year after year,” said Superintendent David Chaney.

But Epic’s academic performance is average or low, as measured by the state’s standard assessment tools. Just over a quarter of Epic’s students last year graduated within four years, compared with 82 percent statewide. Its elementary, middle and high schools received a C-, D and C on the state A-F report cards.

Those marks contrast with Epic’s posting a 100 percent attendance rate for the 2015-2016 school year, achieved by only one other school in the state – ABLE Charter School, a virtual school the state is trying to close.

“There is a good place for virtual charter schools,” said Rebecca Wilkinson, executive director of the Statewide Virtual Charter School Board, which oversees all of the state’s online schools. “I’ve got lots of stories from individual families and students that it’s the right choice for. But more than anything, these large numbers of kids coming in – it’s disturbing, and overshadows the good it (Epic) can do.”

Epic co-founder Ben Harris said the school is working on improving its graduation rates and A-F letter grades. He added the number that matters most to him is enrollment.

Yes, indeed! Enrollment translates into dollars! For every dollar spent by an ineffective online school, there is a dollar less for a real public school.

Study after study has shown that virtual schools are not good schools. Kids may turn on the computer–or not. They may turn on the computer and learn nothing. The bad results are consistent.

Betsy DeVos doesn’t care about results. She loves online charter schools (like her mentor, Jeb Bush, co-author of that classic Digital Education NOW!, which urged expansion of digital classes and schools with no accountability whatever). In Pennsylvania, which is overrun with virtual charter schools, the graduation rate is 48%. That’s high compared to the graduation rate at ECOT in Ohio, which hovers around 20%. The founder of Pennsylvania’s biggest virtual charter school pleaded guilty to tax fraud and is awaiting sentencing, having been convicted of siphoning off millions of dollars. The founder of another virtual charter skimmed $6.5 million dollars for herself but was not charged with a crime because of her age.

Education Week investigated the online charter industry and reported numerous cases of fraud. It is a fraudulent industry. Why do we need more of it?