The latest official report on the Florida Tax Credit Scholarship places enrollment this fall at 48,938 students – a level that ranks the program among the nation’s top 100 largest school districts.

The scholarship is not a district, of course; it serves students in 1,298 different private schools across the state. The students are not economically diverse, either; the scholarship is only for those who qualify for free or reduced-price lunch and the average income last year was only 12 percent above poverty.

So these enrollment numbers speak only to parental interest, and the trend is strong. Enrollment has quadrupled in eight years, doubled in the past four. For the third consecutive year, the nonprofit that oversees the scholarship, Step Up For Students, was forced to close applications and place parents on a waiting list. Even with an increase of roughly 10,000 students this year, the organization has more than 11,000 who have signed up to be notified of more scholarships. In a year in which traditional public school enrollment is forecast to increase by only 1.2 percent, the scholarship program likely will grow by 25 percent.

Not surprisingly, some of the largest growth is coming in urban districts, with Miami-Dade adding nearly 2,500 more students and Orlando/Orange County adding close to 1,000. For the number crunchers, here is a spreadsheet of enrollment by district for the past eight years.

The school district in Pasco County, Fla. is as good a place as any to check in for quick, local snapshot of the education transformation underway in the Sunshine State.

Student enrollment ticked up a tad this year for the district’s traditional public schools, but it jumped markedly for charter schools and private schools accepting tax credit scholarships.

According to the Tampa Bay Times this week, Florida’s 11th biggest school district counts 64,023 students at this point in the school year, up 178 from last year. Meanwhile, the number of charter school students reached 2,215 – up 253 from last year.

For one private learning option, the trend line is even steeper (in part because the overall numbers are much smaller). In 2010-11, 311 students in Pasco used tax-credit scholarships to attend private schools, according to Step Up For Students data. Last year, there was 484. As of yesterday, there was 607.

Statewide, the number of tax-credit scholarships has topped 48,000 so far this year, up from 40,249 last year. Among the state’s 12 biggest districts, Pasco’s year-to-year increase of 25 percent ranks third, behind Polk (30 percent) and Palm Beach (29 percent) and ahead of Miami-Dade (22 percent).