Different experiments were conducted under laboratory conditions, at the Faculty of Agriculture – Damascus University, in order to develop a suitable and efficient screening tool, which can be applied to assess the genetic variability among 20 sorghum genotypes (Izraa series) for high salt stress tolerance. We were able to develop a screening technique involves pre- exposing sorghum seedlings to a sub – lethal level of salinity stress (induction stress) (150 mM NaCl) for 16 hrs which can induce the genotypes to prepare defensive means, which may differ according to the genetic potentiality of each genotype. These protective responses may help the genotype to endure the lethal level of salinity stress (400 mM NaCl) for 48 hrs. At a later stage, the seedlings were transferred to distilled water for 72 hrs and the rate of recovery growth was taken as a criterion to select the highly salt tolerant genotypes by using Zdistribution analysis. Results revealed that genotypes such as: Izraa 10, Izraa 15, and Izraa 18 could be classified as salt tolerant genotypes which showed higher recovery growth and the least growth reduction over the control. Whereas a genotype such as Izraa 22 was grouped as salt sensitive one where the percent growth reduction over the control was greater, indicating that this genotype has low recovery growth ability. Our results suggest that the proposed screening technique is rapid, effective, and match the natural screening.