This article positions the core-selective evaluation process (C-SEP), a pattern of strengths and weaknesses (PSW) model of identifying specific learning disabilities (SLD), within guidelines and best practices recommended for assessing English learners. C-SEP is a broad approach that utilizes multiple sources of data to establish underachievement, conduct a preliminary rule out of exclusionary factors, establish a preliminary pattern of strengths and weaknesses, establish a testing hypothesis, and create a targeted testing plan. When utilizing C-SEP, evaluators adhere to the four P's (policy, publisher guidance, best practices in assessment, and professional judgment) while determining a student's qualification status. C-SEP uses targeted, purposeful assessment practices that consider multiple sources of data and do not over-rely on norm-referenced that can often underestimate an English learner's (EL's) functioning.