Parents, students and educators across the nation are celebrating National Charter Schools Week this week. Data show the movement has plenty to celebrate this year.

Since 1999, the share of students in charter schools has grown from under 1 percent to over 5 percent. In the same time period, the number of charter schools has risen by almost 5,000. In contrast, the number of non-charter schools has increased by only 326 since the 1999-2000 school year.