Abundant Life Christian School (ALCS) is a private Christian school located in Madison, Wisconsin, United States. It is one of the largest non-sectarian private schools in the Madison area. ALCS was founded by Lake City Church (formerly Madison Gospel Tabernacle) in 1978 under the leadership of Pastor Warren Heckman. ALCS was established to be a community Christian school and welcomes families from a variety of churches. ALCS is a K–12 school which shares its 28-acre (110,000 m) campus with City Church (a union of Lake City Church and Mad City Church) and Campus for Kids, an infant to pre-kindergarten child care center. While the three ministries are closely related, the students and staff represent over 50 churches, and many neighborhoods in Madison and its surrounding communities.

Abundant Life Christian School and High Point Christian School consolidated in 2012 to form Madison Christian Schools - one school, two campuses.

ALCS maintains accreditation as a K-12 school through the Association of Christian Schools International (ACSI).

Accreditation History for Abundant Life Christian School includes:

• Association of Christian Schools International (ACSI)
• North Central Association Commission on Accreditation & School Improvement (NCACASI)
• Commission on International and Transregional Accreditation (CITA)
• International Christian Accrediting Association (ICAA)

ALCS was one of the first schools accredited by the ICAA under the leadership of former principal David Wagner.

On December 16, 2024, a mass shooting occurred at the school. Three people—one teacher and two students (including the perpetrator—were killed in the attack; six others were injured. The perpetrator, 15-year-old Natalie Rupnow, who attended the school, died from an apparent self-inflicted gunshot wound at the scene.

• Abundant Life Christian School website
• Wisconsin State Journal, March 9, 2009