Final answer:
The tool used with TELPAS to exclusively evaluate ELLs' reading improvement is RPTE. TELPAS is a state-mandated assessment program in Texas to monitor students who are learning the English language, and RPTE assesses reading proficiency of ELLs.
Step-by-step explanation:
The assessment tool that is designed with consideration of TELPAS (Texas English Language Proficiency Assessment System) and used exclusively to evaluate ELLs' (English Language Learners) reading improvement is RPTE (Reading Proficiency Test in English). TELPAS is a state-mandated assessment program in Texas which is designed to meet federal requirements to monitor students in K–12 who are learning the English language. RPTE is specifically designed to monitor and assess reading proficiency of ELLs.
Learn more about TELPAS and RPTE