During that time, district enrollment increased from 4433 to 15,357 students, and 22 new facilities were constructed or rebuilt.

The district continued to grow at a rapid pace under the leadership of superintendents Ron Wimmer (1991–2005) and Patricia All (2005–2010, 2016–17), Marlin Berry (2010–2016), and John Allison (2017–2021).

The iconic "Blue Backpack Kid" student resource website was first introduced in 2004, and remained largely unchanged until the 2012 redesign which features a gray and beige color scheme with a slideshow that features various students and events.

[9] The vast majority (83.2%) of students are drawn from Olathe, Kansas with the remainder of students living in the neighboring cities of Overland Park (10.1%), Lenexa (5.9%), Shawnee (0.1%), unincorporated areas of Johnson County, Kansas (0.3%), or outside the district (0.4%).

The district has a high school graduation rate of 92.9%, with average class sizes as follows: Racially/ethnically, the student body is predominantly (69.1%) White/Caucasian.