The increase in the needs of the English language learners (ELLs) and their endless demands in terms of achievement and proficiency in all the educational systems all over the world urged teachers and educators to call for new teaching strategies that sound more adequate and appropriate in the classroom. The Sheltered Instruction Observation Protocol (SIOP) Model emerged as one of the worldwide prominent teaching methods that guarantee the ELLs success, especially when it has to do with the

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... rstanding of the content and language learning meanwhile. With its diverse culture and prominent engagement in terms of education, Morocco represents a fertile field for the implementation of the SIOP Model that has proven in different contexts its adequacy in helping ELLs achieve proficiency. This study is about a quasi-experimental research that is implemented in an urban school known for its diversification in terms of mother tongue, socio-economic status, gender, and background. Given these different circumstances of the learners, the findings reported after the adoption of the SIOP Model as a teaching approach showed that it is a reliable and adequate teaching method in terms of content and language proficiency. The use of wh-questions as key indicators to measure the learners' capacity of understanding and responding correctly throughout the experiment phase showed the superiority of the ELLs in the SIOP classes in contrast to the learners in the mainstream classes. This superiority is embodied, especially in terms of the high scores obtained in providing correct answers in a short duration of time. <p> </p><p><strong> Article visualizations:</strong></p><p><img src="/-counters-/edu_01/0726/a.php" alt="Hit counter" /></p>