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This paper assesses the e↵ectiveness of an intervention aimed at improving the reading skills of struggling third-grade students in Colombia. In a series of randomized experiments, students participated in remedial tutorials conducted during school hours in small groups. Trained instructors used structured pedagogical materials that can be easily scaled up. Informed by the outcomes of each cohort, we fine-tuned the intervention tools for each subsequent cohort. We found positive and persistent impacts on literacy scores and positive spillovers on some mathematics scores. The e↵ectiveness of the program grew over time, likely because of higher dosage and the fine-tuning of materials.
Teachers are the most fundamental input of students' learning. For this reason, developing teaching skills is a policy priority for most governments around the world. We experimentally evaluate the effectiveness of "Let's All Learn to Read," a one-year professional development program that trained and coached teachers throughout the school year and provided them and their students with structured materials. Following a year of instruction by the trained teachers, students' literacy scores in treated schools grew by 0.386 of a standard deviation compared to students in the control group. These gains persisted through the second and third grades. We also show that an early intervention in rst grade is more cost-effective at improving literacy skills than implementing remediation strategies in third grade.
AUTHORÁlvarez Marinelli, Horacio; Berlinski, Samuel; Busso, Matías; Martínez Correa, JuliánDATEDec 2022READ: English (4 downloads) View Online Download Spanish (5 downloads) View Online Download DOIhttp://dx.doi.org/10.18235/0004606A one-year teacher professional development program was effective at improving students literacy skills by the end of first grade (0.39 of a standard deviation in overall literacy proficiency). Literacy gains persisted through the second and third grades, even though teachers in those grades were not part of the program. Gains were homogeneous across students of different characteristics such as gender, socioeconomic status, and initial levels of literacy skills.
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