The Joshua Project Progress Scale is an estimate of the progress of church planting among a people group, people cluster, country or language. The Progress Scale is derived from people group values for percent Evangelical and percent Christian Adherent.

Level	Description	Criteria
1	Unreached - Few evangelicals and few who identify as Christians. Little, if any, history of Christianity.	Evangelicals <= 2% Professing Christians <= 5%
2	Minimally reached - Few evangelicals, but significant number who identify as Christians.	Evangelicals <= 2% Professing Christians > 5% and <= 50%
3	Superficially reached - Few evangelicals, but many who identify as Christians. In great need of spiritual renewal and commitment to biblical faith.	Evangelicals <= 2% Professing Christians > 50%
4	Partially reached - Evangelicals have a modest presence.	Evangelicals > 2% and <= 10%
5	Significantly reached - Evangelicals have a significant presence.	Evangelicals > 10%