The document describes a 2012 research study that developed a mathematics screening test for children with learning disabilities. The study involved 342 second grade students in Nakhon Ratchasima Municipal schools. The researcher analyzed the data from the screening test, which included 6 subtests related to math skills. The results showed the screening test was highly reliable, with subtests focusing on visual discrimination, counting, place values, addition, subtraction, and word problem solving. Cutoff points were determined using the 10th percentile rank for each subtest.