Translate effect sizes into what a school understands: months of progress (EEF), Cohen’s U3, probability of superiority and percentiles. With the sentence for your report.
If you use it in your thesis or in a paper, cite it so that readers of your Methods section know how the calculation was done.
Ciudad-Fernández, V. (2026). Months of progress calculator [Web application]. Ciudad Science. Retrieved October 14, 2026, from https://analisisdedatospsicologia.com/en/tools/months-of-progress-calculator
For your Methods section: The effect size was translated into months of progress with the Education Endowment Foundation scale and interpreted against empirical benchmarks (Kraft, 2020), using the Ciudad Science months of progress calculator (Ciudad-Fernández, 2026).
@misc{ciudadfernandez2026mesesaprendizaje,
author = {Ciudad-Fern{\'a}ndez, V{\'i}ctor},
title = {{Months of progress calculator}},
year = {2026},
publisher = {Ciudad Science},
howpublished = {Web application},
url = {https://analisisdedatospsicologia.com/en/tools/months-of-progress-calculator},
urldate = {2026-10-14},
note = {Accessed 2026-10-14},
}