In September 2013, FLHS purchased the building it was leasing from Immanuel Church with the expectation to handle its growth for 7–10 years.

In a July 2018 letter to students and parents, Faith Lutheran Board Chair Steven K. Wright said that the school would be closing for the upcoming academic year due to declining enrollment and increasing debt.

The school offered classes in theology, science, art, mathematics, physical education, English, social studies, practical skills, and the languages of Spanish, Latin.

AP classes and a dual credit programs through McHenry County College and Grand Canyon University were offered.

The school worked with international programs to host exchange students from Brazil, Paraguay, China, Panama, Thailand, Germany, France, and South Korea.